look very nice to me mate, only ting i can say is they would of been better with the back sealed up with fibreglass, will sound better, what i did was just put some sound deadening over the speaker hole to try and get the same effect, i dont really want to do this now as there already done but its summit to think about
also to regards of trimming, depends what your wanting it covered in but leather should be ok on it, allthey need to do is use a vinyl kind of leather and heat and it should work round, i do have creases in mine but there done in a way you cant see them