I applaud you giving FMQ a try :D :D :D it still intimidates me to no end!!! It looks like you are on the right track!!! You will be creating feathers, and all sorts of fancy designs in no time!!!
Is your sewing surface smooth and slick? Do you wear gloves to get a good grip on the fabric? These both can cause more jerky movements.
Practice drawing out smooth circular motions and then try FMquilting them.
Sometimes practicing cursive writing helps, as that is something very familiar to us, and easy to do while FMQ. You would get a lot of practice with curves. These are all tips that I have picked up here and online :wink: