Rob Biddulph is a brilliant children's author and illustrator. You may know some of his stories, such as, 'Blown Away' 'GRRRRR!''Kevin' or 'Sunk!'
Follow the link below to his website where he has uploaded a range of videos teaching you step-by-step how to draw many different characters. 
Will you choose to draw a Sausage dog? Sonic the Hedgehog? Eugene the Owl? or something else?