Maybe sketch process for imposing limits? (4,7)
I believe the answer is:
line drawing
'maybe sketch' is the definition.
'line drawing' can be an answer for 'sketch' (thesaurus). I am unsure of the 'maybe' bit.
'process for imposing limits?' is the wordplay.
'process' becomes 'line' (line is a kind of process).
'for' says to put letters next to each other.
'imposing limits?' becomes 'drawing' (I can't explain this - if you can you should give a lot more credence to this answer).
'line'+'drawing'='LINE DRAWING'
Can you help me to learn more?
(Another definition for line drawing that I've seen is " Outline sketch".)