Step 5: Fold the place mat in half, right sides together and pin your side edges. Make sure the top edge is even too. Sew the side seams. I sewed 1/4" seams. Back stitch start and stop.
Step 6: Make the box corners. Open up your purse and flatten the side seams so that you get a point like this.
Step 7: Pin the sides to hold the corner in place. Measure from the point up 2". Place a pin to mark that spot.
Step 8: Sew a seam straight across from one side to the other at that 2 inch mark. This does require a bit of eye-balling. If you don't think you can sew a straight line you can draw one first with a pencil. Repeat with the other side.Step 9: Pin the points to the bottom of the purse and sew from the bottom of the triangle to the point directly over the existing stitches to attach the triangles to the bottom of the bag.
You are done. Turn the bag right side out and enjoy!! I think these are so cute. I like the fact that it is already lined. There are no unfinished seams on the inside of the bag. They are really quick and easy to make. No cutting involved. You have got to love that sewers!!!!