In Illustrator you can create two objects and blend them together and Illustrator will do all of the work of interpolating how the "in-between" objects fit together. However, it arranges them in a straight line. This straight line is called a spine. The default spine has one point for each object in the blend. When you only use two objects, there are only two points. If you connect those two points together you would get a straight line. You can see this by opening the Blend layer that's created. Alternatively, viewing the illustration in Outline mode will give you a good representation as well. You'll notice the two objects you created but you'll also see a third path as well. This path is the spine. The spine behaves much like a regular path. You can add, delete, and move the anchor points that comprise the spine. You can also modify the handles just as you can a regular path. In this exercise you'll learn how to create a custom path to apply to a blend by replacing the original spine.