Here are pictures of the rosette and neck.
With the rosette, I had to carve out a trench that was 1 cm deep, to get the abalone flush with the top of the board. I carved out the trench by hand, and it took a whooping 6 hours to get all the material to fit nice and snug (the tape is to keep it from popping out until I sand it down).
I also carved the neck into shape, (I know it's hard to see in the pictures). But, I have it just the way I want it.