I learned on a hand crank well over 50 years ago. A couple years ago I rigged up a Singer 99 as a hand crank. I sailed right into it. Maybe it was because I learned on one. I was even able to flat fell a seam on it. I think what you may need to do is get some pieces to piece and practice running them through. Or you can go back to square one. Get some mazes and dot to dots to do just like we teach the small children. I would suggest you work on sewing with your left hand on your other machine first. I have been able to be pretty accurate with mine. I think it is a matter of gaining better hand eye coordination. I've got my DGD working on a hand crank just for that reason. She needs the hand eye coordination. She is determined to learn to sew. She is coming over in a week and we are going to try to start a crazy quilt. I think that will be a fairly easy one to do on a hand crank and it will boost her confidence. That said I can't treadle worth a darn. Some people might do better with a hand crank and some might do better with a treadle.