First the edges of each buttonhole square were pressed in using a template and some steam. This is a 100% poly fabric and therefore not anxious to hold a press. I have had very good luck pressing polies by steaming over the template, with a pressing cloth, and as I slide out the iron I literally slide in the wooden clapper. I rub the clapper back and forth, give it a chance to cool a bit than lift it away. The resulting fold is nice and crisp.
The sharp press then made the corners easy to miter. After mitering the edges were trimmed back and the squares were ready. They were sewn right side to wrong side of the bag top. I used a 1.5 stitch length and stitched in the little box. The box was then cut open with the little triangles at the end like any bound buttonhole. Then the facing is turned to the outside.
This is where my stream of consiousness kicked in and I pressed the squares and topstitched them down, totally forgetting to turn them into butterflies. The next bag, and there will be another soon, will have the butterfly BHs.
Once turned to the right side they were pressed and topstitched around the edges. The straps were tucked in and stitched to the BH opening on the "wrong" side of the strap which is the inner edge of the BH hole.
Next steps are constructing the bag bottom and then the sides. I think all the hard parts are done at this point and the rest of the construction will be pretty standard. I'll show how I embellished the back in the next post....Bunny