not that thats not good advice mattu but I wouldnt agree. I find it easier to write whatever comes to you. Obviously, you pick a topic first, then just scribble down whatever comes into your head. Then later go back over it and adjust, changes words etc etc. whatever needs doing..

I know some mc's who make a living from it, they carry a pen and notebook with them everywhere, and their always thinking up lines, weather its one line, 2,3 etc. Then when they go home, they work on it, insert lines, take out lines etc etc...

For me the worst part to writing a tune, is the chorus,