I did my first bleach pen craft today on a denim tote bag I found at a dollar store... Here's my bag:
This picture is of the bleach on the bag (had to wait an hour before washing).
I first made a stencil and then used the stencil to make the mickeys.

I did both sides of the bag but the second side didn't come out as well as the first one. I don't know why. I found instructions on pinterest on how to bleach denim tote bag. hehehe.