Hi Lumen,
7a - is an anagram so you need to remove the O
14a - First 2 letters are a 3 letter "Skirt" with the last letter extra.
15a - Another anagram
17a - First 2 letters are a 3 letter "shot" minus last letter
38a - 4 letter "to pass ball" (as in rugby scrum or line-out) minus last letter + L(eft) - definition is 'instinct'.