I'm trying to build a shooting bag from T.C. Alberts "Recreating the 18th Century Hunting Pouch" book. Specifically the Tennessee Rifle Bag. I'm experiencing a bit of confusion on how it stitches together. I'm including a picture of the patterns. For some reason it's not clear to me how the inside flap is supposed to go. Does it stitch to the back body as a reinforcement? Are the dashes stitching marks? Then whys is it just on the bottom edges of the front flap but not on top. I assumed by the picture of the finished bag in the book that that probably represents the leather stitched around the edge to finish it. Maybe someone can enlighten me.