No matter what sneaker it is, no matter what brand creates it, they all start out exactly the same - as a blank piece of paper in front of a designer. (Or as is more often the case nowadays, a blank iPad screen.) There are many steps on the way, from initial pie-in-the-sky sketches to to-the-millimeter renderings that accompany patent applications where accuracy is paramount. Check out 25 Must-See Design Sketches of Your Favorite Sneakers - along with shots of the sneakers themselves just to compare.