My advice isn't worth much but I give it anyway. LOL I don't know how I would quilt the blocks but the flowers are fine. Charisma quilted one for me that I had appliqued flowers around 2 corners like you did. I didn't have as many flowers and they were a little bit larger than yours but she outlined them and quilted in the border around them and it was beautiful. She does such good work and know exactly how to quilt each pattern. I love her work.
sassy granny