i watched a video where some guy builds this and complains that when built it can't keep upright and walk. so I thought it would be interesting to try and fix the problem and built one myself and from that I took the 2 base pieces on each foot and flipped them outwards, then took 2 small cardboard rectangles and a thin strip of masking tape and attached each cardboard rectangle to each foot and it kind of gave the mummy shoes in a way but otherwise that fixed the problem and it would then walk. if the creators of this product were to read this I would suggest 2 extra pieces that attach to the feet for more stability when it walks and otherwise my mom loved it and was a fun 10 minute project.