Hi! I'm having trouble attaching the dress's back-top panel to the back yoke. I clipped into the seam allowances at the center back (where the yoke edges meet) and then edge stitched the outside yoke. But I've got a wee bit of raw edge (from the dress back) sticking out between the dress and yoke) -- where the yoke edges meet in the back. I can't figure out how to fix this. Can someone please help me? The dress is a gift and I want it to be as close to perfect as I can manage. Thanks!