Put in the correct position in resting place, cheered up (10)
I believe the answer is:
brightened
'cheered up' is the definition.
(I've seen this before)
'put in the correct position in resting place' is the wordplay.
'put in the correct position' becomes 'righten' (I can't justify this - if you can you should believe this answer much more).
'in' is an insertion indicator.
'resting place' becomes 'bed' (where you can sleep or rest).
'righten' going within 'bed' is 'BRIGHTENED'.
Can you help me to learn more?
(Another definition for brightened that I've seen is " Cheered up".)