Just finished up a new bag for my son! The pattern I have used is Simplicity 8108, the licensed Avengers home sewing pattern. My son is a huge Avengers fan, and just needed the bag.
Now, I’m never a fan of following directions, so after cutting out the pattern, I put them away. Everything had to be done in chunks, and i stitched all three layers together at the same time (outer layer, padding, and lining). To make sure that there were no raw edges, i bound them all with black bias tape.
A few things i would do differently next time would be to not sew the zipper teeth so close to the fabric, and to haul out my heavy duty machine (I was being a little lazy about pulling out different machines today).
Total supply costs were about $30. I put in about 7 hours of work, which includes cutting fabric and pressing. Everything was done on the machine, which definitely saved time.