I could be wrong but...

These works of art seem extremely detailed for a 3 year old:


Cal did the coloring (sorry, can't line draw Spiderman yet!)



an entire city scene complete with roads, cars, airport, airplane, mountains, river, sky, and sun



an airplane with a hang-glider waiting below to catch jumping/falling passengers(!!!??!)

I find it especially amusing that a child so in-tune with details is drawing the airplane wheels on the top of the plane ;) I guess that is why the hang-glider is needed!