Woah this was more fun than I imagined, Yesterday by chance I found a group on DA, Design-A-Character is the name, and is perfect to train your imagination and originality, has different exercises to do, I to start this, and it was much easier than I thought, and pass a very fun time doing it

The group http://design-a-character.deviantart.com/

The shape pack i use http://design-a-character.deviantart.com/art/May-2014-Shape-Challenge-453128568
Art and Desings By Rayden (c)