I started with a blank onesie, Tulip Fabric Spray Paints and various masks (hand cut craft foam, a flower taken apart, peace sign craft) I also put a layer of mat board (I had it laying around) inside the onesie to protect the back side
Lay out the masks to keep the whites
I start with my lightest color & work with quick sweeping action to get an even coat
I sprayed this diagonally with a rainbow brite theme. If your spray lifts one of your masks just skooch it back in place
I removed the masks gingerly while still wet and flipped them onto my journal and took prints with the paint left on the mask... so the mask became a stamp. If using a acrylic mask you can flip that onto another onesie for a positive print. Another variation can be achieved if you move the mask once you spray one color - move your mask - then spray another color. You should have a great image in a new color!
Have fun creating... and yes I did this and another onesie in 15 minutes... not including dry time!