Sweeten the deal. There's a type of fake glass called sugar glass that you can use to create the illusion of walking across broken glass. The material looks like real glass but is made of sugar and shatters much easier than regular glass.
Toughen the soles of your feet. There are products on the market that are designed to toughen up your skin, which can help to protect your feet from cuts.
Choose the right kind of glass. When you walk across broken glass, the type of glass you use is very important. You want to choose thicker glass like that of wine bottles, as opposed to drinking glasses, which are much thinner and would have sharper edges.
Prepare the surface. Choose a surface that's flexible like sand or gravel, and then create a thick layer of glass on top of it. When you walk across the broken glass, the pieces will move beneath you, which decreases your chances of getting cut.
Take slow steps. When you walk across broken glass, go slowly. If you feel a sharp edge, reposition your foot to avoid getting hurt.