If you can’t find a hoodless sweatshirt, you can try using a hooded one. You will have to use the seam line between the hood and the sweatshirt as a guide for the following steps.
If you can’t find a dressmaker’s pen, a regular marker will do.
If you used a regular marker, cut outside the edge of the line so that it doesn’t show up on the finished sweatshirt.
If you used sewing pins earlier, be sure to pull them out first.
Puffy paint is also called “puff paint” and “dimensional fabric paint. "
Mask off areas you don’t want painted with masking tape or freezer paper.
This works best on light-colored sweatshirts. If you are decorating a dark-colored sweatshirt, get the kind of iron-on transfer paper that’s made for dark fabrics. Search for images or logos from 80’s cartoons, movies, and bands.
Add details using a contrasting puffy paint color. Use fabric glue to add embellishments, like rhinestones.
Soak the sweatshirt in lukewarm water for 30 minutes. Stir 5 packets of drink mix into a large pot with water. Add the sweatshirt into the pot and wait overnight. Bring the pot (with the sweatshirt inside it) to a boil. Switch the stove off, then let the water cool. Remove the sweatshirt, rinse it in cold water, then dry it.
