I just found a brilliant tutorial over at the Wicked & Weird blog (A good'n for a variety of creative inspiration) The blog post was a re-post, originally taken from A Beautiful Mess, and the blog post has detailed steps and lots of images to help you with this DIY project.This is what you'll make:And this is how you'll do it:

1. Find a crap old painting
2. Use sticky letter stickers to spell something out on-top of the painting
3. Spray/Paint it all white
4. Then peel the letters off.