Wow. very nice. I think if you are going to hand quilt, you should echo, or quilt about 1/4 inside the lines. Stitch in the ditch is better for lazy machine quilting. I also agree that you should keep the designs for the nine patch simple and geometric- just outline each block (or inline it, as the case may be.) the flowers will pop out then.
Excellent job. You should know that all of us love to look at others work and give suggestions when requested. You might get a whole lot of opinions, but you'll also get encouragement and help. The people on this board are amazing.