One Line, One Sentence

A black-line concept illustration for a product page, where the connecting line is a sentence — a source, a thing carried, a destination — rather than a decorative swoop. Six fields.

graphicsdesignillustrationimage-promptminutes

What it hands backOne drawing · a line with a grammar · reads aloud

A result produced by One Line, One Sentence — Vibary

A second, different result produced by One Line, One Sentence — Vibary

Input
  Sentence  Vibary hands a running pattern to whoever describes one
  Source    a panel with a prompt field mid-typing
  Carried   a small play wedge, four times along the path
  Dest      a figure mid-stride catching it in both hands
  Path      one curve, arrowhead at the hands, crossing nothing
  Line      3px outline, 1.5px detail, black on white

Returned   1 drawing · 1:1 · black line only, white ground

left      the panel sits lower left with a shallow perspective and
          a visible edge thickness, a caret blinking in its field
path      one curve leaves its right edge, rises, and lands on the
          figure's hands - it never loops back, never crosses
          itself, and nothing sits on top of it
carried   four wedges spaced along the curve, the nearest small
          and the last full size, so travel reads as direction
right     the figure caught mid-stride, weight forward, both hands
          closing on the arriving wedge
extras    three only: a caret, a cursor, a small easing curve -
          each one a thing already in the sentence
read      "the panel hands a wedge to the person" - which is the
          sentence, out loud, from the picture alone

SKILL.mdthe whole thing, as you would paste it© vibary.ai

You fill in 6 fields — the braced lines at the top. Everything below them is fixed.

1The sentence this draws
2The source, on the left
3The thing being carried
4The destination, on the right
5The path
6The line

One Line, One Sentence

Produce ONE image: a monochrome line illustration for a product page. Follow every line below. Replace only the FIELDS block; everything after it is fixed.

First — do you have the fields?

If any field below still has braces around it, stop and ask. Put all the questions in one short message, and show the example under each one so they can see the shape of a useful answer. Wait for the replies, then draw. Never fill a brace yourself: a value you invented is a value nobody asked for, and it will look exactly as considered as the ones they did give you.

Ask in whatever language they are writing to you in. Translate the questions and the examples; do not make someone read English to tell you what they want.

The examples are only examples. If someone answers a question, use their answer; never fall back to the example because you prefer it.

If the fields are already filled in, ignore this and carry on.

Fields — replace these six lines only

The sentence this draws: {subject, verb, object, destination} e.g. Vibary hands a running pattern to whoever describes one
The source, on the left: {what it leaves from} e.g. a rounded panel showing a prompt field mid-typing, drawn with slight perspective and visible thickness
The thing being carried: {one thing, repeated along the path} e.g. a small play wedge, repeated four times along the path, growing slightly as it travels
The destination, on the right: {who or what receives it} e.g. one figure mid-stride catching the wedge in both hands, leaning into it, weight forward
The path: {one curve, where it starts and ends} e.g. one continuous curve leaving the panel's right edge and arriving at the hands, arrowhead at the destination, crossing nothing
The line: {two stroke weights, black on white} e.g. 3px outlines, 1.5px interior detail, black on pure white, no fills

The grammar law

This genre is full of drawings that suggest technology and state nothing: a device, a person, and three swooping curves between them that begin nowhere and arrive nowhere. They look competent and say less than a caption would.

So the connecting line here is a sentence, and it parses:

A source. The curve leaves a specific edge of a specific object — the panel's right side, the hand, the open lid. Never from empty space.
A thing carried. The same small object repeated along the path, three to five times. Repetition is what makes the line read as transit rather than as ornament.
A destination. The curve *arrives*: it ends on the receiving hands, the open surface, the waiting shape, and an arrowhead settles the direction.

The curve never loops, never crosses itself, and nothing is drawn on top of it. A closed or crossing path is the failure this rule exists to stop, because the eye it carries never lands.

The test: follow the line with a finger and say what happens. If a sentence comes out, the drawing works. If the only thing you can say is "technology", it does not, and no amount of redrawing fixes fields that had no sentence in them.

The composition

Square. Pure white ground — no texture, no gradient, no border, no text anywhere.
Source on the left, destination on the right, path between. The source is a rounded geometric form with a shallow perspective and visible thickness — a panel, a device, a window, a card.
The destination is the livelier half: a figure or object caught mid-motion, tilting, striding, reaching, leaning into the arriving thing rather than standing to receive it.
Weight sits centre to lower-centre, with a diagonal running through the composition. Generous margins.

The extras

Three small floating elements, no more. Every one is something already named in the sentence — the thing being carried, a mark from the source, a trace of the destination. A generic icon that belongs to no part of the sentence is the same failure as the decorative curve, in a smaller size.

The line

Black or near-black only. No colour, no fills, no grey wash.
Two weights: heavier for outlines, lighter for interior detail. There is no third.
A little hand-drawn wobble is welcome; fussiness is not. Bodies and objects are summarised, never detailed.
Hatching only where a form passes behind another, and only a few strokes. Never a filled black area.

Never

✕ a curve that loops, crosses itself, or ends in empty space
✕ more than one path, or a second thing travelling it
✕ floating icons unrelated to the sentence
✕ colour, gradients, drop shadows, 3D, texture, backgrounds
✕ text, labels, numbers, or a caption
✕ crowds — one or two figures at most, and only if the sentence needs both

The result

A picture that earns its place beside a paragraph instead of decorating one: a source, a thing, a destination, and a line you can read out loud — which is also the fastest way to find out whether the feature it illustrates can be explained at all.

The whole template, in one piece. The steps below are the entire workflow.

How to use it

Copy the whole template with the button above.
Replace the six FIELDS lines. Write the sentence first — the other five are just its parts, and a sentence you cannot say plainly is a feature nobody can explain.
Paste it into any image-capable agent or model, in one message. One run returns the drawing.
Read the result aloud following the line with a finger. If the sentence comes out, ship it; if it does not, the fields were vaguer than they looked.

What you swap

The sentence this draws: Vibary hands a running pattern to whoever describes one
The source, on the left: a rounded panel showing a prompt field mid-typing, drawn with slight perspective and visible thickness
The thing being carried: a small play wedge, repeated four times along the path, growing slightly as it travels
The destination, on the right: one figure mid-stride catching the wedge in both hands, leaning into it, weight forward
The path: one continuous curve leaving the panel's right edge and arriving at the hands, arrowhead at the destination, crossing nothing
The line: 3px outlines, 1.5px interior detail, black on pure white, no fills

Before it runs

A sentence with a subject, an object and a destination. `Collaboration` is not a sentence and will produce a picture of nothing.
One thing carried. Two things travelling the same line is two drawings sharing a frame.
Restraint about the extras. Three floating elements read as the thing in transit; seven read as clip art.

When to reach for it

When a feature needs a picture beside it on a website: how a thing gets from one place to another, who hands what to whom. The genre is full of drawings that gesture at technology and say nothing; this one has to survive being read aloud.

What changes

One clean monochrome line drawing on white, the register product pages actually use — no colour, no background, no shadow.
The connecting line has a grammar: it leaves a named source, carries a named thing, and arrives at a named destination, with an arrowhead that settles the direction.
The small floating elements are the thing being carried, repeated along the path, rather than a scatter of unrelated tech icons.
Two stroke weights only — heavier on outlines, lighter inside — so the drawing reads at thumbnail size on a feature row.
Reading the finished picture aloud produces a sentence. If it does not, the drawing is decoration and the fields need rewriting, which is cheaper to find out here than on a homepage.

One Line, One Sentence

First — do you have the fields?

Fields — replace these six lines only

The grammar law

The composition

The extras

The line

Never

The result

How to use it

What you swap

Before it runs

When to reach for it

What changes

Pairs with