There are pretty elements to it, but what sticks out to me the most is that much of the diamond is going to be covered by the wide petal-like prongs. Personally, I like to see more of the diamond from the sides (more sparkle). I really like the engraving on the profile and bead set diamonds in the shank. However, the pink surprise stone seems a little too large for that setting.
I like that it's unique. Maybe you could slightly modify the head to make it a little more delicate?