This is how it is to go on. With Starch in a paint pan.Use a paint roller.paint the walls,add your sheet ,use a window wiper(or a cloth) to get the it even , paint with starch one more time over sheet. Let dry and be hapy.The reason you use starch is that you can remove at anytime. I know this because my DD and I did this in her dorm room to give her some color. After that We changed it 3 times.Just pulled off and started again.