Drawing a Skeleton

When I was in fifth grade, I was the second best artist in the class. I'm not sure exactly how this was determined, except I remember everyone thought I could draw well but there was this one guy named Kevin who was better than me.

One day, we had a challenge in our class: to draw a skeleton from memory. There was a judge who was going to walk around and decide which skeleton drawing was the best, and it was going to be posted on, like, some bulletin board somewhere.

I had a lot of doctors in my family, and I thought this was a challenge where I had a chance to beat Kevin. So I drew my skeleton, although I honestly didn't really know what I was doing.

The judge kept going back and forth between my drawing and Kevin's drawing. It was agonizing. But finally, they picked.... Kevin's. Of course.

Anyway, I was just thinking about that day and wondering how good a drawing of the human skeleton I could do from memory now, since I've actually taken anatomy and all that. So here's my present attempt, totally from memory, no cheating:

How do you think I did? And let me point out that completely perfect ankle mortise on the left.