I have scoliosis, among other things. Some tops just won't hang right. Sometimes I add a small shoulder pad on the lower side. I try pinning it different ways until I get the best look.

I agree with Jen about dressing slouchy.

I like shirt jackets in suedelike fabric that have a streight bottom and are semifitted, and I think they look best with the shell or T that matches. I like them a bit longer than most that are sold now, but I have found some great ones at thrift stores. Some are unfitted but a good more casual look.

You probably know if you wear dresses that the two-piece, or matching pieces from the separates dept. work better than the one-piece.