It took me 3 yrs to get stippling and that is all I do for now. I don't think I will ever get to feathering. All I can say is stay determined and continue to practice. For me practice on scraps wasn't fulfilling so I practiced on small pieces and wall hangings with nylon and my mistakes weren't as noticeable. I am determined not to send my stuff to a long arm quilter. If I make a quilt I want it to be all mine. So stay with it you will get it. I wish I was as determined with sticking to my diet. Watching Leah Day was also helpful to me.