I made another one today (see the tutorial), this time with a liner. If you want a tutorial on how to make a zippered lined bag, check out my post on making a wetbag. It's the same basic idea (and if you use that one as a guide, remember the shiny side of the PUL would correspond to the right side of your inner material). Just make sure to put the vinyl layer in there before you sew up the sides of your outer fabric. I also made this one slightly larger.
The white fabric was cut to 8 x 8 inches.
The red patterned fabric was cut to 8 x 7 3/4 inches.
The clear vinyl was cut to 8 x 7 1/4 inches.