01
Fix the inventory before arranging the first frame
List three square tiles, labelled A, B and C, and keep those labels visible in every planning frame. Put A on the left, B in the middle and C on the right of the initial row. Record that all three have the same size for this study. This establishes which properties are held constant. A later change in tile count or size would then be a new design decision rather than an unnoticed inconsistency. Keep a copy of the starting frame beside the inventory for reference.
02
Describe the final arrangement without inventing the motion
Draw A above B and C below B in the final frame. Mark B as the stationary reference for the proposal, and record that A and C change position. These two frames establish the endpoints but do not yet specify the paths or timing between them. Leave those fields open rather than pretending that a pair of drawings is a complete movement plan. If a reviewer asks whether the tiles cross or overlap, record the question and add an intermediate frame that addresses it before production.
03
Check identity and record the unresolved choices
Read the sequence from left to right and confirm that A, B and C can each be followed. Check that the stationary tile occupies the intended reference position in the planning views. Then list the remaining choices: movement paths, duration and whether there is a pause at either endpoint. No audience response is implied by this check. The completed sheet contains an inventory, two endpoint arrangements, the fixed reference and open motion decisions. It gives a collaborator enough context to continue the study without silently choosing a different transformation.