Since we got everything mapped out and a good understanding on what to exaggerate. Let's start!
Here, I draw a very, very, fast sketch of my idea on the caricature. I want to keep the sketch as loose as possible. This process shouldn't take longer that 5 minutes.
The quicker you get your idea on paper, the better the idea is going to look. Why?
This is actually a very interesting explanation. You have two hemispheres of your brain, your left hemisphere and your right hemisphere. The left side actually controls all of you calculations, like math, speech, etc. The Right is actually the creative side. So when you are drawing, your brain is actually having a war between each hemisphere. The quicker you draw, your left hemisphere will seem confused and not be able to keep up. While your creative side is winning the battle.
I will do a tutorial on that later. But for now just remember, get your idea on paper fast.