Anything 100% cotton you better watch out. I have a new obsession. Really easy. Draw on a shirt with a bleach pen. Like the Tide pens except it is Clorox. This isn't a new idea, but the first time I tried it. I used the entire bleach pen in one afternoon. I was kinda dizzy to say the least. Not really. The teal on in the top left was my demo shirt. It already had paint on it. I learned that you have to get it started on something other then your nice shirt. It comes out liquidy like ketchup…