Draw some sketches (4)
I believe the answer is:
etch
'draw' is the definition.
(I've seen this before)
'some sketches' is the wordplay.
'some' indicates the answer is hidden within the clue (some parts of the word are used).
'ETCH' is hidden within 'sketches'.
(Other definitions for etch that I've seen before include "Carve (design) on a surface" , "Cut; engrave" , "Wear away by chemical reaction" , "Score deeply" , "Design by eating out" .)