Stay Blazed.
I dont know, I ususally just paste all my fav. instruments, vsts, and fonts into a pattern on FL and pick out a good set of drums and just start manipulating one pattern. Then I go back and make several copies of the pattern and change em around to see if I like it. Replace drums for other drums or layer if needed. I don't sample so I usually just play guitar maybe for a while until I like a little melody and then go w/ it.
P.S.
alot of cats say that you should always seperate drums from instruments in FL, but i never have and I find that I can mix the drums better if I can hear the rest of the instruments along w/. Let me know what you FL users think about that.
Peace,
Elementree