Skilfully fashions many floating structures (6)
I believe the answer is:
crafts
'skilfully fashions' is the definition.
'crafts' can be an answer for 'fashions' (crafting is a kind of fashioning). I'm unsure of the 'skilfully' bit.
'many floating structures' is the wordplay.
I cannot really understand how this works, but
'many' could be 'c' (C is the Roman numeral for 100) and 'c' is located in the answer.
The remaining letters 'rafts' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for crafts that I've seen before include "Boats; skills" , "Hand-made objects" , "Builds" , "Activities involving skill in making things by hand" , "Objects made by hand" .)