I didn't say it was an accurate tracing. I printed yours out, put it on my light table and drew on the other side of the paper.
No you didn't.
You used a clip art anatomically correct skull, mine is a cartoon, Look at the shape of the skull, the jawline or the eyes, the shape around eyes and the eyes themselves...
You'r saying you traced a cartoonish skull, and somehow the outer shape became anatomically more accurate? The eyes become circular?