I adapted the recipe. Jessica mentioned her recipe made entirely too much starch, so I cut it by four.
This is the recipe I used:
1/16 cup corn starch
1/8 cup cold water
1 cup hot/boiling water
Mix cold water and starch together. Add hot/boiling water, stir.
Thats it. I know, really simple!
So, you want to know what my roommate and I did with this recipe?
We coated it onto fabric we had already cut out (with a paintbrush). Then, we put the soaking fabric on the wall, and pressed all the bubbles out. We caught the starchy drips with a papertowl.
And it looks like this: