After I finished the outline of the piece I started grinding it to make it sort of domed. I use a rotary tool with 1/2" cylinder bur.
The blue stuff that is on the piece in almost every photo is layout fluid. It makes scribed lines show up better, and afer I have done a lot of grinding it makes it easier to see what I am doing.
I like to scribe lines around the piece and grind away one area at a time. The layout fluid makes it easier to see that I am staying the the area I designated to grind.
In this photo I am almost finished. The next step is to lightly grind the piece all over and make sure is has a smooth contour.