Step 1 — Pick Your Prototype Format
Step 2 — Constraints
No screen
Paper only
Must be testable in <5 min
Zero cost
Remote-friendly
Needs real user
Silent test
Step 3 — Build Plan
Step 4 — Fidelity Level
Lo-fi
Hi-fi
Sketch / stickyClickable wireframePolished mock
Low fidelity — fast and rough is fine
Step 5 — Team Roles