Avoid platform shoes that have no arch. Like the picture below, platforms that are flat across that are over 2 inches get uncomfortable QUICK! Not only that, but the only way to walk is to stomp full-foot-down at a time instead of walking heel-toe, heel-toe like you would in normal shoes/sneaks/heels. And sometimes they begin to lift at the toe seam (or back heel seam, depending on how you walk). If you’re going for higher platform shoes, make sure they have some sort of arch support or something.