It could be used to portray saint without top drawing aid (7)
I believe the answer is:
stencil
But I can't explain it at all! Could you help me understand?
(Other definitions for stencil that I've seen before include "Perforated sheet for producing patterns or symbols" , "Clients for copying device" , "Sheet with cut-out letters, pattern etc for copying" , "It's perforated for ink or paint to pass through" , "Sheet with holes used to make ink or paint patterns" .)