when it comes to drawing it on the tablet how do you get the lines so perfect? Or more to the point, how do you get them so straight and defined? When you "sketch" it out what setting do you use on your brush? I use Corel Painter X and setup a brush to work like a blue graphic pencil. When I want to color I first lay down the base colors then start to add the darks, than the highlights. Anything in this process that I go through that you could recommend to improve upon it?