Just do the cheek until you feel comfortable to move on. I have always been very uncoordinated with my left hand. I watched a lot of videos before trying a straight and the guys that used one hand always looked awkward, so I decided it would be best to learn with both hands. I doubted my ability to learn to use my left but I stuck with it. Over time it has become completely natural feeling. My left hand is still use left for other things.