How to write AI prompts (that get you a presentation you'd actually give)
A good presentation prompt isn't longer — it's sharper. What to put in, what to leave out, and how to fix a board without starting over.
- The AI Explainer takes a board type plus a description of up to 3,000 characters — that description is where presentation quality is decided.
- Describe the outcome, not the topic: name the audience, the one takeaway, the order, and your constraints.
- Attach a PDF as context instead of retyping material into the prompt; keep the prompt short and directive.
- When one frame misses, use Rewrite on that frame instead of regenerating the whole board — generations are metered, editing never is.
Every board in SketchMind starts with the same dialog: pick what kind of board you want, then describe it. That description is where the quality of your presentation is decided. Not in the editing afterwards, not in some hidden setting — in the two minutes you spend typing.
Most people type a topic and hope. This guide is about doing slightly more than that, because slightly more is usually all it takes.
What the AI actually does with your prompt
The AI Explainer works in two steps. First you choose a board type: presentation, flow, plan or checklist. Then you describe what you want, in up to 3,000 characters. For a presentation board, the AI doesn't jump straight to drawing — it writes an outline first and decides how many frames the story needs. Empty frames appear with their titles, then fill in one by one. For a flow, plan or checklist, you get a single frame with the whole thing, usually in ten to twenty seconds.
That outline step matters for how you prompt. You're not describing slides — you're briefing a structure. The better your description explains what the story is and who it's for, the better the outline, and everything downstream inherits from it.
Start with the outcome, not the topic
The weakest prompts name a subject: "onboarding", "Q3 roadmap", "our pricing model". The AI can build a board from that, but it has to guess everything that matters — who's watching, what they already know, what they should do afterwards.
A sharper prompt describes the outcome: what should the audience remember when the last frame closes? "A presentation for new support hires explaining how we handle refunds, ending with the three cases they must always escalate" gives the AI a story with a destination. Same topic, completely different board.
The four things a strong prompt names
You don't need prompt-engineering tricks. You need four ordinary ingredients:
|Ingredient|Weak|Sharper|
|---|---|
|Audience|"a presentation about our API"|"for non-technical customers evaluating us"|
|One takeaway|"explain the migration"|"they should leave knowing the switch takes one afternoon"|
|Order|"cover the features"|"start with the problem, then the before/after, then pricing"|
|Constraints|"keep it short"|"no jargon, one example per concept"|
Audience, takeaway, order, constraints. If your description names all four, you're ahead of almost every prompt the blank box has ever seen. And you still have most of your 3,000 characters left.
Use context instead of length
When the material already exists somewhere, don't retype it into the prompt. You can attach a PDF as context — a spec, a report, meeting notes — and let the AI pull from that while your description stays short and directive: what to build, for whom, in what order.
There's also a toggle to build on what's already on your board. That changes what the prompt is for: instead of describing everything from scratch, you describe what should be added or where the story should go next, and the AI works with what's there.
Fix frames, don't re-roll the board
The first generated board is a draft, and treating it as one is the real skill. Everything the AI generates is normal, editable board content — so when one frame misses, select it and use Rewrite with a pointed instruction: "make this a comparison", "simpler wording, one example". The rest of the board stays put.
This is also quota sense. One honest note on plans: board generations are metered — the Free plan includes a one-time 5 board generations, Pro ($19/month) includes 20 per month plus 100 frame rewrites. Re-rolling a whole board because one frame was off is the expensive way to fix a sentence. Editing and presenting, on any plan, are never metered.
Then present it — that part needs no prompt
When the board says what you mean, presentation mode takes you through it frame by frame, with reveal steps inside frames, no export required. The prompt got you the structure; from there it's just your board.
The fastest way to get a feel for this is to write one real prompt about something you actually have to present this week — at app.sketchmind.app, free, no credit card. And if there's something you wish prompting could do, the public roadmap is where we track what's coming.
How long can a prompt be?
Up to 3,000 characters. If your source material is longer than that, attach a PDF as context and keep the prompt itself short and directive.
Can I change what the AI generates?
Yes — everything the AI builds is normal, editable board content. To fix a single frame, select it and use Rewrite with an instruction; the rest of the board stays untouched.
Do prompts use up a quota?
Board generations are metered: the Free plan includes a one-time 5 board generations, Pro includes 20 per month. Creating, editing and presenting are never metered on any plan.
