Pretty obvious steps - draw out stencil on freezer paper and cut out with a craft knife. Iron onto the t-shirt and stipple on the paint (in this case - white, neon pink and neon green)
Rip off stencil, cover with a cloth and iron on hot to set the paint. I didn't have any particularly fabulous pics of the t-shirt in action...this one's a little blurry - but you get the idea? And since lil'pil looks like she has some kindof weird birthmark across her face, or is wearing Hollywood Montrose sunglasses (any Mannequin fans??), i thought i'd post this one to make it clear what she really looked like. That's me in the fabulous aztec jumpsuit...I wish i could wear my hair like that every day. Crimping ROCKS!!!