3D as in stereoscopic. You need the red/blue glasses that accompany 3D comics (you get two pairs with every 3D print of mine).

I’ve been making 3D paintings for over 10 years, usually in aerosol and usually freestyle (improvised). I began drawing in red and blue crayons when I was seven years old. Below are work examples that include some stereoscopic imagery, either in the finished product or the working sketches.