Go here for the Customizer version.
A photo of me with each pixel rendered as a different size diamond corresponding to brightness. The pixels are connected in columns like beads on a string.
The model is generated with a Customizer script which will allow you to upload your own images and tweak the pixel bead style a bit. However, as written, the design is very slow to compile and the results are kind of tricky to slice and print. I'd like to be able to recommend reliable settings for easy printing, so I think I'll refrain from publishing the customizer until I can figure out some fixes.