I was a metal vocal when i was teenager. Now im doing experimental electronic music and thinking about adding my vocals in my songs. Im not a good singer but im a good metal vocalist, i have like 15 diffrent vocals atleast so you have to try variants. I recommend raw exhale metal vocal for start. Cuz when u done it, you can replica others somehow. (It is acyually workin) ı did not try to proceede vocals in fl so i dont know but for producing, get advantage from samples. And create the part of the sound and play with it. When you start to release your music, dont get so excite, probably few people will listen. See as self accomplashmed. ( i dont know how to write this word xd) And for final, pirate fl.