Your artwork makes me warm and fuzzy inside and had a wonderful time taking a trip through it LOL, it's no doubt you'll find me setting a watch on you now.
I stuck a bunch of magnets on the back of them to put them up on the fridge. Not only does the laminate look nice, but it protects the picture.
For coloring, it really depends on what you want to do. This is made with solvent-based marker (Prismacolor), and the thing with marker is that you need to work quickly so the ink remains damp (allows you to blend and layer color better), and always work from light to dark. You also need to use paper that can stand up to being soaked with ink, something like cardstock or bristol board. I've found that thick index cards take ink very well too. Those are the two most common things I end up telling people. If you need any tips about anything specific, just ask. :3
Ok, you know anything about prisma colored pencils?
Also, I have copics and prisma markers, but they never seem to turn out so beautiful as art like yours. Yours SHINES. Lemme send you a link to one of my copic marker images, and you tell me what I could have done to spice it up. Rip me apart, please. I need some constructive criticism in order to get better.