As soon as you notice a stain, gently remove any wet paint with a spoon or dull edge—don’t rub it in more deeply. Depending on the paint type (latex or oil), dab a little dishwashing liquid, rubbing ...
You had so much fun renewing the look of your old plant pots with spray paint. The downside? When you realize the spray paint ended up on your clothing too. No need to toss that much-loved tee shirt ...