Dad has no wood to make a fine display! (7)
I believe the answer is:
panoply
'a fine display' is the definition.
'panoply' can be an answer for 'display' (I have seen 'Impressive display ' mean 'panoply' so perhaps 'display' could also mean 'panoply'). I'm not certain of the 'a fine' bit.
'dad has no wood' is the wordplay.
'dad' becomes 'pa' (both can mean one's father).
'has' says to put letters next to each other.
'wood' becomes 'ply' (I can't justify this - if you can you should give a lot more credence to this answer).
'pa'+'no'+'ply'='PANOPLY'
'to make' acts as a link.
Can you help me to learn more?
(Other definitions for panoply that I've seen before include "Trappings" , "Wide range" , "A complete or splendid array" , "Apply no mix to splendid array" , "Superb array; suit of armour" .)