The 12-year-old was doodling on a sheet of cardboard that had some masking tape on it, and a trace position the engrave a fraction of an inch off from the sharpie lines. (Also, power was too low to zap all the way through the tape)
It’s got a weird 3D-ish drop shadow effect going on that I think is actually pretty cool. Somebody who actually has any artistic skills (not me) might be able to employ this to get some really interesting and nice-looking results.