Stamp design first person went over with superior (6)
I believe the answer is:
emboss
'stamp design' is the definition.
'emboss' can be an answer for 'stamp' (synonyms). I'm unsure of the 'design' bit.
'first person went over with superior' is the wordplay.
'first person' becomes 'me' (first-person pronoun).
'went over' shows that the letters should be reversed in order (I've seen 'gone over' mean this).
'with' says to put letters next to each other.
'superior' becomes 'boss' (similar in meaning).
'me' in reverse letter order is 'em'.
'em'+'boss'='EMBOSS'
Can you help me to learn more?
(Other definitions for emboss that I've seen before include "Raise (a design) in relief" , "opposite of grave" , "printing style" , "Decorate with riased design" , "Chase" .)