I teach fmq on a domestic.... here's what l find helps. On a fresh practice sandwich, put on your walking foot, ( feed dogs up), set the stitch length to 10 st./ in. ( arond " 2.5 to 3 on digital), and sew a winding lazy s path, going a " mediun" speed.Listen & pay attention while sewing this. Listen for the tempo of the machine .Drop dogs, put on quilting foot, and go 1/4" next to your previous path doing fmq...trying your best to get the same foot pressure and tempo of sound while moving sandwich at as close a rate as you just saw walking foot do. Compare. I'll bet you just did a whole lot better. Traing wheels, lol...do this every day before your quilting session on a real project. For some, putting on soft listening music, or humming " the skaters' walz, eg.helps.You WILL improve vastly after a week of daily practice like this!