I love your choice of pattern and fabrics. Good job! On some parts of this lovely construction, the quilting would not show particularly. You could use Stitch in the ditch or an all over pattern. I would be inclined to continue the floral motif with a leaf or feather pattern on the whites in a fairly pale blue, outline your embroidered flowers, make a floral shape in your other large squares and eaves in the other blue sections. You have not said who you made this delight for.
My Tiger cat is a very careful quilt inspector also.