I still have to do 2 smaller ones but I dont have the time till tonight. These were made with EVA foam, the process is simple: cut 4 pieces, 2 identical S-shaped ones and two lines with a pointy end, one must to be smaller than the S shaped ones and the other larger, draw a " ^ " pattern on it and crop it. Then you use some black acrypic to color the joints that will be seen and after its dry finish with gluing everything with contact cement (follow the instructions)