How to make Sonics shoes

The Adidas website has a feature that lets you customize shoes, so I made some Sonic shoes. They r not exactly the same but it s about as close as you can get without becoming a cobbler and building them from scratch. The shoes I customized are called zx flux slip on premium, I would post a link but they keep changing it. As for the buckles, I m going to use horse saddle buckles for mine, the straps on these shoes do not detach so to get the buckles onto the shoe I m going to make a cut in the middle par