I first create the exterior, then I use spray adhesive on the insert (corrugated plastic) to adhere to the bottom. Then the interior lining can be attached. The plastic is not only adhered to the fabric itself, but is also sandwiched between the exterior and interior fabrics.
Yes this is my own pattern, a very basic box of sorts. Which allws for easy variations. Stabilizer used is VERY stiff. Pellon brand stuff didn't do it for me. I purchase 50 yard rolls of embroidery stabilizer to keep the bags stiff (my preference).
I rummage through wools, felt, and dark fabrics while the central air does it's thing. I do mamange to slip in something a little brighter just to make the days go by easier. I have been sewing like a mad woman, thinking about doing a craft or trunk show this fall, and I will need to be prepared.
I made an impulse purchase of fabric. Over $20+ per yard. Somedays I don't know what I am thinking. Great fabric, I really like it. I think the handbag turned out pretty good. The recycled turtleneck comes into play with the lining. There was a stain on the sleeve but I loved the color so I hide it in my stash. I was rummaging through my fabric stash when I came upon the turtleneck (cotton knit). What a combination, the most expensive fabric I have ever cut in to mixed with recycled clothing.