I made this at Techshop!
1.5 yards of rip nylon fabric for the bag
.5 yeards of rip nylon fabric for the pouch
a pen, pencil, marker, or tailor's chalk
a zipper, snap, or some other kind of fastener
When I drawing your pattern out on your fabric, keep the fabric folded in half with the bottom of your bag on the fabric fold line. By patterning it this way, you will end up with a much stronger bag since there is no seam along the bottom where all the weight typically is. Also, you will save yourself some time sewing later on.
I made mine slightly larger than a typical grocery bag with much longer handles (12" long and 3" wide) so I can put it over my shoulder when necessary.
Once you have your pattern drawn, cut it out, making sure to cut both layers at the same time.
Keeping your first pattern folded in half, place the top of the handles on your fabric (which should still be folded in half) lining the tops of the handles up with the folded side of the fabric. Trace the shape of the handles onto the fabric, going down about 5" below where the handles end. Once you have this drawn out, cut it out.