First one is not bad, because window pane sounds like a window pain which is the moment when someone leaves and you have to watch him go through the window, it means sadness.
The second one is a bit eh, i don't know corny, but it's not a bad line either, he just says that even his victims in this case haters has to acknowledge, appreciate his skills, because you know bitches = haters, make someone cum = enjoyment.
And last one is not bad either, but you didn't copy the whole point
"But still get a little bit of thrill and some real enjoyment
(Off what?) Off the feel of going in
(Like?) Like your bitch when she gives me brain
Like she thinks I'm dumb
Grabs the crown of my dick and blows me to kingdom come"
In these line he means gives me brain = gives me head which means blowjob, that's why he than talks about blowing him.
Those line aren't bad at all