Congrat's!
Unfortunately, I'm in the position of only having used Copic Sketch markers (with a flexible brush tip), so I don't think that any of the techniques I've worked out for using them would necessarily translate to the Prismacolor markers. (Which I have occasionally eyed, and would like to experiment with -- but yeah, having invested so heavily in a Copics set, for a similarly
amount of money, I'm reluctant to spend even more on Prismacolor markers.)
But I have to echo what Treefox says:
* paper makes a BIG difference. While you are in the experimental phase, I would suggest getting a bunch of different types of paper, and maybe copying the same drawing onto each of the types, and then color each of them. It may let you see the best how different the effects are depending on the paper finish.
* Look for paper sold in art stores specifically as "marker" paper.
* I've said this before, but I particularly like doing my marker coloring on HP Laser Photo Paper (matte finish, 8 mil, 54 lb).
Do you have access to a cheap laser-printer? I acquired a little HP LaserJet that only does b&w on sale at like Staples, and it's a godsend to my process. One of the things I was trying to work around was that my scanner can't really handle paper larger than 9x12. Therefore, for larger and more complex pieces of art, I often draw parts of it on several sheets of paper, ink it, then scan in the inks to clean them up a bit, and print them out on the laser-printer directly onto the paper I want to color on. That ensures that the color piece will fit on my scanner.
Pro: laser-printed lines are impervious to markers, so you don't have to worry at all about smudging or smearing. Con: not all types of paper will fit through the laser printer (bristol board won't).