Splendid work Jack.
I'd love to see what you would do with the copics.
If you scan it in to a computer and then do a printout, you could do test colors on the print.
I've done that before. The copics can muddy the ink a bit, but not terribly.
It's a good way to try it without risking the original.

I also have to spread some rep before I can rep you again so soon.
But, I will return.