I strengthened the trouser fabric parts with iron-on interfacing. It doesn't make the fabric as stiff as the jumper felt of the first bag but I think it will still work. I put a zipped pleated pocket into the back part. To make the pocket look more interesting I only made the lower pleat rather than two pleats meeting in the middle and also used the other trouser fabric for the pleat. Next up it's putting the front and the back together... I don't know how to do that yet, so wish me luck! My brain already hurts thinking about options.