Playful sketch this, after edit (8)
I believe the answer is:
skittish
'playful' is the definition.
(I've seen this before)
'sketch this after edit' is the wordplay.
'sketch' becomes 'skit' (short comedy performance).
'after edit' indicates an anagram.
'this' anagrammed gives 'tish'.
'skit'+'tish'='SKITTISH'
(Other definitions for skittish that I've seen before include "(Of horses) excessively lively" , "Nervous; playful" , "Frivolous" , "Playful in coy manner, frisky" , "Frisky or mettlesome" .)