I want to pass along a great tip to help you quilt smaller details and designs.
When you are free motion quilting you generally have both of your hands on the quilt, elbows out and parallel with the machine and you are applying tension to the quilt sandwich to keep it flat.
When you quilt this way you are using your "Big Girl" muscles in your shoulders and arms. This is just what you want to do when tensioning the quilt sandwich.
When you are quilting small details such as backgrounds, little feathers, etc., it is very difficult to do those using your Big Girl muscles. You need more flexibility.
I highly recommend that you drop your right elbow. This releases those larger muscles.
Once the right elbow is dropped, lightly rest your left hand on the quilt sandwich and quilt with the fingertips of your right hand only. Now you are using your "Little Girl" muscles.
You will be amazed at the ease that you will be able to quilt those little details and designs!