The arms were only bristol board forearm wraps that were attached to sleeves. I put snaps at the top of the sleeves so they could attach to the shoulders of the chest piece (See picture)
Cut out forearm wraps and trimmed them with black tape
Cut the sleeves off a cheap long sleeved shirt.
Cut the sleeves lengthwise and resized them so they fit snug.
Attached the forearm wraps to the sleeves.
Legs were pretty simple: cut, try on, mark, repeat. This was done until properly fitting pieces were made for both the thighs and the calves. Also, knee caps were made, split in half and one piece was attached to the calf and the other the the thigh pieces. The parts were all held on with velcro. The thigh pieces were attached to the shorts using snaps because they kept sliding down.
Finally, a nice little jock piece was made which snapped on to the shorts as well; the shorts were fairly small and tight.