Are you using a beat? Because it might be easier to write to a beat. It really stabilizes your flow if you use a beat or even just a metronome to help you write.
If you’ve never rapped before IMO it should be easy to find the basic rhyming words (at least it was for me) now that I’m more advanced I try to find more complex words to rhyme with. I mean how many times can you rhyme “damn with man”
well I did yesterday apparently
dont give a damn
for a fan
go ham
on these mans and stans
tryin to ruin all my plans
damn
see I like that because the rhyming words are condensed all together in a few bars making it sound cool if you say it really fast. there’s a lot of little techniques you can pick up on.
The flow & enunciation is very important too. With that u gotta practice. I’d say standing up and really getting into it. Get involved with your lyrics. Be passionate about them. And just spit it like a killa would. Lol. Good luck ask if you need any more advice. Sounds like a cool gift.
I gave my mom a rap for mothers day and she loved it.