just clipping the circles with the outer ring might help. when i did this - http://www.acooke.org/arms.html http://www.acooke.org/arms.html - i tried to make t

just clipping the circles with the outer ring might help. when i did this - http://www.acooke.org/arms.html http://www.acooke.org/arms.html - i tried to make the ellipses the correct shape, but it's non-trivial for extended ellipses on a curved surface (although yours are small so perhaps that's not an issue). anyway, the big breakthrough in making it look natural was to simply clip at the edge of the globe.