Now that I have the fabric and the card woven strap made for my file bag, I can start the sewing-it-together step. I decided to keep the pattern I had rather than making another strap (laziness).
I found a really good tutorial for making a messenger bag on YouTube which I am going to (loosely) follow.
First I cut out a single piece for the two sides of my bag and a piece for the flap. I also cut corresponding pieces of lining material and some cotton batting I was lucky enough to find. I sewed the batting to the lining pieces to make them easier to handle.
Then I sewed the side seams of the bag up and made those cute little corners (like I did for the tote bag). I did the same for the lining pieces. I also sewed the flap pieces together, right sides facing but leaving the top edge open so I could turn it inside out and top stitch.
Then I fiddled around with the best way to put all the pieces together so I could sew up the around-the-mouth seam of the bag. That one seam attached the handle, the flap and the inner and outer pieces together, but only if they were in the correct order.
Eventually I figured out the sequence (and then didn’t photograph it, but it’s the same sequence as in the tutorial video) and sewed the whole thing together. I turned it all right side out through a small hole I had left in the seam for the purpose.
After the small hole was sewn shut, I had my bag.
I have really enjoyed this little project and it has come together much faster than I would expect. No, it’s not perfect; the seams are wonky and some of the weaving is a bit dodgy, but I made it, I had fun doing it and I have something useful at the end of it. What more can I ask from life?