Set up your work area outside with a plastic tarp or cardboard.
Mix bleach solution (1:1 bleach to water) in bottles of your choice.
Mix 1 cup hydrogen peroxide with 1 gallon water in a bucket to make a neutralizing bath.
Choose a design for your shirt and fold it, securing it with rubberbands.
Apply bleach solution to the shirt, making sure to get it in the folds.
Leave bleach on for 5-20 minutes and remove rubberbands.
Soak shirt in peroxide bath until it stops fizzing.
Rinse the shirt before washing.
Wash the shirt with cold water and tumble dry on low.