I have a question about the interior pockets, after you mark the 8 1/2" line and match up the raw edges and sew your 1/4" seam, then fold the fabric over, you're supposed to get around 2 1/2" above the pockets. For some reason I'm getting 3 1/2". What am I doing wrong? This is on the small bow tucks bag. Help! Anyone have this problem? What did you do?