Whenever we get a new tool, device, or gizmo, it always takes some time to learn how to use it. The same can be said with any sewing machine tool, especially if it's a brand new foot that you're unfamiliar with. Teri Lucas at WeAllSew is going to help you become familiar with one such foot, the BERNINA Patchwork Foot 97D, as she shows you her top nine tips on how to use it.