From there, he uses a separate program to turn the image into pixels. Each pixel corresponds with a Lego stud on the canvas. So if he's creating a piece that is 64 studs by 64 studs, he'll turn ...

An artist has created the world’s smallest LEGO sculpture — so tiny it’s barely larger than a white blood cell.

The most straightforward is to use the LEGO fence piece, first released in 1967. They can be laid in two rows, four studs apart, and they’ll serve as perfectly functional train track.