There is no right or wrong. You are doing what you love with the tools you have available. Don't judge yourself so harshly. As a friend of mine always says "Don't let anything steal your joy!" Your avator quilt is absolutely stunning.
You are such blessing to your family.
P.S. If I judged myself by most of the quilts I see here, my machines and stash would be out for the garbage man this morning! Hugs.