What's this?

I do dozens of schools visits each year and I always give a drawing lesson at the end of my presentation.

I ask the kids if they can draw a circle, even a bad one. Then I show them how they can turn it into almost anything - a planet, a pig, a cat, a bunny.

So... what do you think this is? Send me you best pic (tweet me at @kevinarts #circledoodle) and I might even give away some stuff.