Just one word of caution from somebody who's been there . . . Once you have your pockets made, do not be cavalier about the process of putting them on. It is not as simple as glue and go. First off, the heavy coarse nylon doesn't grip the glue well. It really is necessary to do some cleaning of both surfaces with solvent, and to do a little careful sanding of both sides to create a fuzzier, "grippier" surface.
Make sure you put the dry suit on and mark where the pockets should be. Too high, and your weight belt may interfere; too low, and you have to curl up like a swimming nudibranch to get into them.
Put a large book inside the dry suit leg when you go to do the gluing, so you get a really flat, stable surface. Follow all the instructions for the glue to the letter. ROLL the pocket down onto the dry suit, and then put a heavy weight (surgical textbooks work) on top and DO NOT DISTURB THE ENTIRE ASSEMBLY FOR AT LEAST 24 HOURS AND PREFERABLY 48.
Fail in these steps, and you will have a pocket like mine, which is peeling off bit by bit. According to the Airspeed Press drysuit book, there is no really good way to take a home-built pocket OFF a drysuit and reapply it neatly, so you have one shot at this to get it right.
BTW, the book I referred to is well worth having.