I've wrote verses to a beat before, but anyway what's the proper way to do it,listen to the beat first and then write your verse or listen to the beat and then pause, write a line and then play it again?

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mystery Is a Freak!!

ITawAPuddyKat: Yeah, I guess. But I won't be a Lesbo for life.
Smartone Freal: oh so u DO have plans of turnin str8
ITawAPuddyKat: Well Yes, Yes I do.
Smartone Freal:
ITawAPuddyKat: Lol, all smiles aren't we? Lol
Smartone Freal: lol yea i cant hide what i think bout u
Smartone Freal:
ITawAPuddyKat: ...Oh, what DO you think about me? Lol
Smartone Freal: lol sorry thats private
ITawAPuddyKat: EWWWWWWW..*Sigged*