best paper/pen for drawing to be downloaded

No clue but I'll bump this up in case somebody has one.

If theyre ink, Id either use a bright BRISTOL Board, or a Strathmore "ultra high surface" paper. I forget the numbers for the STrathmore, just ask the people at a GOOD art supply (forget the AC Moores or Michaels, they hire people who dont even draw). A really stiff high polish , bright surface will give the best contrast for retention of your ink drawins. If you do scratch stylus work, then a white clayboard is really good.
Hope that helps.

You can use gel pont pens or, Id really use this method to get the best repro you can. Do your original on any kind of paper then adjust its lines and finish it by copying on tracing paper. Use something like a carbon paper and reproduce it lightly on the final sheet. Ink the final drawing from the carbon tracing. That way you can get a real hand done look and no phony look. A computer rendering gets too perfect in its lines and shading, you want some contouring in your lines, the eye picks up that detail.