Ok look been there and done all that its calles trial and error. But i will help first of if i am not mistaken the wing is fiberglass, so yeah you did right by sanding but you also have to clean it afterwards and see where you may have missed cause believe me the paint will show you if you dont find it first then you will do it all over again.


Step 1: Sand and clean with (denatured alochol) get that at a hrdware store. Make sure you wipe down then get you some primer from any auto store and make sure it has high build so the it may fill in any little holes. Then sand that down real good make sure all even. Clen before painting.

Step 2: Then you can paint, but i always you a promoter before i spray that way you are guarenteed a good tacking. Then lightly spray a goat twice. Then you can get real down on that paint and make it shine but not to much or it will run or start geiing crows feet.