#1: Place the piece of cardboard inside the shirt. This will help the fabric paint from bleeding through to the other side.
#2: Decorate your T Shirt with the fabric paint.

 Fun slogans to put on your t shirt: Throw it out not about,  Hug a Tree, Reduce Reuse Recycle, Earth Day Should Be Everyday, There is no place like Earth.

#3: Set aside to dry
#4: Wear your Earth Day T Shirt on April 22nd.