Shapes for Photoshop in Rhino 3d  

ok, this is how to make complex shapes for photoshop in rhino 3d, try to work in just 1 viewport, as depth doesn't matter.

i started off drawing this, just with polylines, and added more and more objects as i went along. using rotate with copy turned on is really useful for accuracy.

after you get it all set out, push ctrl a, and then use the planarsrf command. then render it with a black background.
paste that into photoshop quickmask and invert the colors. do whatever you want with it. i just gave you a example.