The drawing is a two-tier cake with scalloped frosting on a plate, three lit candles on top, built from 33 closed outlines. Shapes are large and the lines heavy, so a crayon does not swallow the boundary.
A Birthday page. Because the file is vector rather than a picture of a drawing, it stays sharp printed at any size and can be enlarged well past a sheet of paper.
Every contour is closed, which is what lets a fill tool work without escaping into the background, and what stops a line reading as an accidental break on paper.
The drawing is constructed from geometric primitives in code rather than drawn by hand, generated by a model or taken from a stock library, so there is no third-party artwork in it and nothing to attribute.