Oh goodness. I love this shirt.
It looks ten times better in person.
I made it with this fantastic stuff that I discovered recently; it's like spray paint for clothes! Isn't that brilliant? It stays soft and you can even wash it! The possibilities are endless with this. I'm excited! It's called "Simply Spray".
On this shirt (which, by the way, is pink, not red.) I used red, pink, bright pink, and white. You certainly don't have to use that many different shades, but I like how it looks like I've worn this shirt while doing dozens of art projects. :o)
Start with a few swirls of each color, then go over it again with each color making big circles randomly, for a layered look. Don't forget to add cardboard or thick paper between your shirt layers!
Let it dry, and ta-da! You have all the benefits of looking like an artist, without actually knowing how to paint!