also i notice a lot of people tend to GRIND the prismas into the paper to get a "solid" look. you dont need to press that hard really, not to mention theyre rather soft so youre breaking off a lot more than youre using and have a chance of damaging the "lead" on the inside, preventing future use of the pencil *a pain i know all too well from improperly storing mine*
im hesitant to replace my prismas cuz theyre so expensive and i often catch myself thinking "Thorn? are you REAAAALLY going to use this? dont you want to practice with something a little less expensive so you dont fuck up?"
but then again, when i first started face painting i bought the most expensive stuff rather than the watery kind, even though i was a beginner. but also thats a helluva lot different. if you buy the inexpensive stuff, people tend to have an allergic reaction to it, not to mention it doesnt stick on =P youre better off buying the expensive stuff cuz theres a huge difference in quality/texture.
as far as colored pencils go, i find that crayolas work just fine when youre just trying to "color" something for colorings sake, but for shading, prismas are wonderful. so..stick with the basics if youre a "coloring book" artist. my word of advice. youll save money that way.
Thorn, the money-grubbing art whore