hey, i just thought of a way to make a custom mannequin. okay, i was watching Monster Garage the other night, and i saw a rerun of a Christmas special. anyway, they had to make a huge Santa mannequin. so, what they did is they got some sidewalk chalk, and made a large grid. then, they sketched out what they wanted it to look from the side, and the front. you would have to lay down, and have someone trace you out in the pose you wanted your mannequin to look. anyway, they took some pencil thin steel rods, and bent the rods to match the sketches made on the grid. they then tack welded the 2 pieces together...side piece, and front piece. so, you get an + sign if your looking at it from the top. they then took some more of the rods, and slowly made a built out chest, waist, legs, and arms. they welded the pieces into place. they then bought some screen like you would use for a screen door. they stretched it out, and glued the screen onto the steel rods. it gave "Santa" a built up and body like look. so, they took it to a place, where there they sprayed some foam type stuff onto the screen. kinda like a light coat of plaster. anyway, they sanded it to make it look good , and they painted it. you don't have to sand it, cause, it will not be seen. hope this helps. oh, and one more thing, you don't need any metal benders. the steel will be thin, so, you can bend it by hand. if you would like it to be easier, you can go to a smaller, and thiner rod.
~Michael