First and most important, this is a tutorial based on Blender-2.5. I recommend you download 2.59 or newer. I have chosen to create a simple Pump. I could have used a sketch of a shoe as a background image. But i found a better way to start. I will use a character made with the MakeHuman character editor as my reference model of a human foot. And i will sketch the shoe using the Grease Pencil in Blender