Your stitches look fine to me, not an expert, but all I do is hand quilting! It isn't how small your stitches are, that will come in time, it is getting them the same size, and that only comes with practice,I think you are doing a great job!! Want to see it when you are finished.
Don't you just love quilting by hand? Or at least I hope you are relaxing enough to enjoy it!
Keep up the good work!
Ninnie