Making blush is super simple! All you have to do is get some flour and food coloring (the color you want your blush to be). I haven't tried it yet but a friend of mine did.
Put some flour into a container and add some food coloring. Try swirling it so that the color is all mixed in. Get a blush brush and apply properly. Here's a color guide for the most common blush colors.
Small amount of Red; Lots of Flour: Pink
Body Glitter, any color; more or lots of flour: Glitter Powder
Brown Food Coloring; Flour: Brown, good for Girls & Women of Color