When I first started grinding I forced patience by using fine belts. The temptation to get it done quick will cost you every time. At least until you get some good habits built up. If you go to the edge of the wheel don't stop and back up, things like that. I also start out with a small wheel and once I get a nice centered hallow I slowly work up in diameter. Everybody has their own way of learning but I have helped my friends get the hang of it and I start them out the same way. It's all about practice :<0) Your doing good so far. I have mostly used mine for restoring and my first blade has been waiting on an oven for waaaay too long. It gets here tomorrow so the fun really begins for me now.