Signs of victory seen on all hands (5)
I believe the answer is:
palms
'all hands' is the definition.
'palms' can be an answer for 'hands'. I am not certain of the 'all' bit.
'signs of victory seen on' is the wordplay.
'signs of' becomes 's' (I can't explain this - if you can you should give a lot more credence to this answer).
'victory' becomes 'palm' (I've seen this in another clue).
'seen on' is a charade indicator (letters next to each other).
's' put after 'palm' is 'PALMS'.
Can you help me to learn more?
(Other definitions for palms that I've seen before include "Hand parts or tropical trees" , "Large, tropical trees" .)