How do you make a messenger bag?

You can sew one yourself with a sewing machine. Borrow one in HomeEc or use a family member's. Or you can use seam glue called NoSew in a tube. Practice making a bag out of a pair of old jeans first. You can buy fabric that looks like the black and white plaid in the picture but you might have to look around a bit at the fabric stores. See all the links I posted below. There is one from youtube that shows how to sew it.