when a quilt is quilted by a long-armer (or anyone else) the fabric (draws-up) just like when doing applique or embroidery- this is the reason for it being necessary to have your backing and batting larger than the top- then after completion it is spread smooth trimmed and squared- it is normal for the edges to come out like they are on this quilt. and when an edge to edge pattern is used on the quilt it is also normal for some of that stitching to be in the binding.