David Catá feels the positive influence of certain people in his life: friends, family members and teachers. He wants them to know how much they’ve meant to him—how much they are woven into his life. In order to express this, he embroiders portraits of them into his hands.
For example, on the left, you can see a portrait of his girlfriend, Tamara. On the right is what his hand looks like after he has removed the stitches.
It's kind of romantic, don't you think?
Here's a video showing how he does it. There is remarkably little blood. You can see more photos of his portraits at Design Boom.