So I was shown a program called Sculptris, which if you don't know, is a free sculpting application that this genius programmer called Tomas Pettersson (or DrPetter, as he's known online) created in his free time. He's now working for Pixologic, the makers of Zbrush, to either make the program better or just assimilate all the nice features it has into Zbrush. Nevertheless, I reccommend having a go of it, it's free and allows you to get the basics of 3D sculpting down. I've been having a go myself and have made the following. Hope you like them.