You'll get there soon I'm sure. Check out the DILD, RC, and WBTB tutorials, those are best for starting.

I've dreamed in cartoons too, there are two reasons for that. If you watch cartoons all day, you might dream in cartoons because dreams are made partially from you daily activities, or i you're really tired, you brain uses as little energy as possible, eliminating shading and shadow and such, making it look cartoony.