You are doing OK! At the risk of repeating everyone else, practice is key. Since I didn't want to waste fabric and time practicing, I made the practice pieces actually be a useful item and gave them away. Simple table runners, cosmetic bags, baby blankets. Even the 14" sandwich squares were bound and became liners for my non stick cookware for my home and RV. Yup, I made those up for gifts as well. My friends wanted them for their non stick cookware! It appears that if you give a quilted gift to a non quilter, they don't even see the stitches!
All I did was meander. Over and over. Until really, I was sick of meandering. And just like all the other posts, one day, it didn't look so bad and I began to try other patterns. Now free motion quilting is the best part of the entire quilting process for me. I really enjoy it. What a thrill not to have to stitch straight! I'll probably never get over that aspect! Just keep trying and you will get there!