ROTSARUCK AND PATIENCE!
I haven't done this but I have thought about it.
1. Make a drawing and cover it with waxed paper.
2. Cut the posts a little long and tack them down at each end over the drawing with Walther's Goo or Pliobond. Leave them long enough so you can cut them off it they are stuck to the waxed paper.
3. Cut a strip of Tulle about a half inch too long and a little too wide.
4. Tack down one end of the Tulle and stretch it over the posts. Tack down the other end.
5. Use the tip of a round toothpick dipped in CA or use a syringe with Walthers Goo. Fast Tracks sells a syringe for this.
6. Spray lightly with a 50/50 mixture of aluminum and grey flat paint well thinned.
7. Remove carefully from the plan and paint the other side.
8. Trim the top of the posts. Mark the bottom of the posts along a line and drill holes for mounting.