Are you on ravelry.com? It’s a lot of knitting, but there’s some crochet projects on there too, with LOTS of links to free patterns. This link also has a directory with lots of other dress patterns. Since we don’t know exactly what style you’re looking for, it’s probably best if you look through these patterns yourself. If you can give us a better idea of what style you want (maybe a photo of something similar?), we can try to be more specific.