I think it is a very pretty quilt, love the colors and design. Is it flannel?
I understand what you are saying though, that you didn't expect it to have wrinkles and you would like to do something about them. Usually wrinkles will form after washing if part of the quilt is not quilted at the same density as the rest of the quilt. It's hard to tell from pictures, but if that's the case then it might be possible to do some additional quilting (to tame the wrinkling) and then wash again. If not - well, it's still a beautiful quilt, just not what you expected.