Looks good.
I like what you've done. I don't mean to be super critical, but as I was looking at it I noticed the lightest blue triangles around the white background of your center and thought, "This quilt block would be spectacular if those triangles were a different color." Something like a greenish blue or another color to complement the beautiful colors you chose. I love blue, but it felt like it needs a little more color. I certainly could be wrong. You asked for opinions and that is mine.