I've learned a few things from this first experience, so please allow me to share my new wisdom:
- Juice pouches are slippery. Use double-sided tape to temporarily hold the pieces together while you sew. Straight pins just don't cut it.
- Use some GooGone® or other oil based cleaner to remove the glue that held the straws on BEFORE you sew it together, then wash each one with dish soap and water and let them dry.
- Because the material you're using is so slippery, it's difficult to get an even stitch. It sometimes moves too quickly and sometimes too slowly through the sewing machine. I'm thinking that practice is the best way to solve that problem.