Any help with these clues would be appreciated,thanks.
13 across- Black Billy comes in tiring badly(9)?I????A??
3 down- Tapering fold run up in fashion-supplied by this?(8)????RA?E
4 down- Cabaret dancing to resolve neurosis in a way(7)????AC?
13dn: you want "can" (Billy) in an anagram of tiring. Definition: black.
3dn: Once you've got 13ac, you've got the 3rd letter of this answer, which should make things clearer. You're looking foe a common 2-word expression for the fashion industry.