I think my final pattern will be done in Tunisian. I worked up this bag to primarily get the body and construction kinks worked out. To create this bag I worked up a large swatch of double crochet. I just came up with the stripes as I worked. I then created a tube with this swatch to create the primary shape of the bag. I left a flap that I thought would be the correct size. I then crocheted the strap in two pieces. I regret doing this and the final pattern will call for the strap to be completed in one piece. I think this caused some of my stretching problems.
To attach my strap I single crocheted it to my tube. I started at one side of the bag with single crochet. When I reached the strap I changed to slip stitches. When I reached the other side of my bag, I attached the handle with single crochet. I did this to both the front and the back of my bag. I then tied and glued in all my loose ends. I also had to sew excess material from my straps to shorten them. It seemed like the easiest solutions and it helped give the bag better shape.
As I figure out this project more I will add some decorations and change up the stitches but for now I am going to enjoy my first crochet messenger bag.