Improve getting two directions by luck, first off (7)
I believe the answer is:
enhance
'improve getting two' is the definition.
'enhance' can be an answer for 'improve' (enhancing is a kind of improving). I'm not sure about the 'getting two' bit.
'directions by luck first off' is the wordplay.
'directions by' becomes 'en' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'luck' becomes 'chance' (synonyms).
'first off' means to remove the first letter.
'chance' with its first letter taken away is 'hance'.
'en'+'hance'='ENHANCE'
Can you help me to learn more?
(Other definitions for enhance that I've seen before include "Improve quality (of item)" , "Raise in value or quality" , "produce better image" , "improve things" , "Boost" .)