Motif silhouette first
Every space reference reduces to one first-read shape: a ringed or banded planet disc, a vertical rocket body, a helmet and visor mass, a connected constellation path, or a bounded galaxy field. Stencil viability comes from naming that one shape and letting it dominate, because a stencil that tries to carry two heroes at the same size prints neither clearly.
Check: Cover all detail with your thumb. If the piece still reads as one space object at arm's length, the silhouette holds. If it becomes texture without a hero, choose the hero before changing line weight.

