I h ave been trying like you for yrs. it just doesn't get any better and I challenge myself all the time. I can't sew a straight line, and if or when I ever get a scant 1/4" seam you will hear me all the way to the east coast. I am careful when I cut, do all the right things have even taken several on going classes. I guess I am just not going to ever be much better than I am right now. I am so discouraged.
Rita