Copied by drawing on a transparent sheet placed on top (6)
I believe the answer is:
traced
'copied by drawing on a transparent sheet placed on top' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for traced that I've seen before include "Sketched the outline of" , "Followed by discovering marks or clues" , "Discovered by following pieces of evidence" , "Copied by drawing on a transparent sheet placed on top" , "Followed the tracks" .)