Nice dark background! I always struggle with them, working only with color pencils so far. Could you recommend me good copic markers? Also, were I into terrible puns, I would say he's SMOKING hot, but let's better not go there XD

First: Don't. These things are six bucks a marker. I can fellate art store employees for my collection, but you have no recourse to shipping.
The letter indicates color in english, the second number a specific hue, the third number the value. I think this one was B39 Prussian Blue with an undertone of B13 Ice Blue. There's only a few colors that are so gorgeous to me that I'd call them indispensable, and they're so subjective that you probably wouldn't enjoy that much. Again. Don't bother.
I know what you're thinking... Colored pencil over marker gets NOTHING done. Don't bother with that. It's a recipe for frustration. It's like a ghost of color over an unholy blob.
Pastel over marker works well. It shows up!
Really, there's nothing you can cover with colored pencil, except inks. Inks and dyes. You might want to try into those. Colored pencils are such an aggravating medium. When I want to go nuts with colored pencil, you know what I do? (I still haven't done an entire pic like this.) I scan the colored pencil, then "color to alpha" the entire picture and tint the white underneath some of it. If I want a white highlight core on black, I do the entire thing in inverted color and invert the image.
Sorry.

Hehe, alright, you convinced me XD

Although I personally wouldn't shy away because of the costs. You're right, there are no decent art supply stores around here, one probably has to live in a major city like Chicago for that, and not in Cornfuck, Lower Austria, as I do. I ordered my Faber-Castell artist grade pencils from Amazon, and when I order individual pens that I use more than others, they cost me between 3 and 4 Euros per piece, which isn't far from the $6 you pay (one day I will get the 120-piece set in a wooden box with drawers, and it will be 200 Euros well spent XD).

When I started with color pencils, I mostly did it because I remembered them from my childhood, and it's the easiest way to get a lot of color without screwing around with brush and paint, even more so since I turned out to be allergic against drawing digitally. Anyway, while spreading out on different media would be interesting (I might try ink one day, but I need to get a plastic jumpsuit and an atelier for that XD), focusing on one might further my specific skills on that, I imagine.

What a lovely medium, very rich and lots of supple texture! I like how this came out. It makes me think the character was just told something and they're feeling out their response!

I should do more of these! Why not!
It's the same face I make when people tell me things, so that means a lot.