You need to elevate your vocab, it was way to simplistic here, but it's your second piece so i can't really hold much against you. God knows my shit was worse when i started.

Structure it more, try to make the bars the same legnth basically all the way throught.

eg...instead of:
you said i was number 1, but now all you do is make fun/
you lie to me you broke your promise, now i know you were never honest/

try:
You claimed I Was Soley Number 1, All You Do Is Humiliate...
Your Unmorally Dishonest, With You - I Don't Wanna Affilate...

see, flows alot better.

Was o..k for a 2nd piece though. 1/5, but don't take it badly, just keep rhymin'