It looks very nice!
The chrome material looks great. I wonder, how is the chrome material made?

Oh, and you should increase the tesselation for the individual objects by opening the attribute editor Ctrl+A, look under tesselation. You can also klick an option there too see how the objects are tesselated into triangles. Then you get those round edges in your project.

Increasing tesselation for U and/OR V, from default 1.5 to 3, or 4, 5 or 6 will give major improvements.