Try hitting the highest notes in songs you know. Some high notes that I know are:
1. The saddest fear
Comes creeping in
That you never loved me
Or her, or anyone, or anything
Ye-aaaaaa-hhh
-from I knew you were trouble by Taylor Swift
2. I gotta have you
I gotta have you!
Oh oh oh, yeah
-from 22 by Taylor swift
3. I've made some real Big mistakes but you make the worst one look fine
I should've known it was strange
You only come out at night
I used to think I was smart but you made me look so naive
The way you sold me for parts
As you suck your teeth into meee,oh
-from vampire by Olivia Rodrigo
3. Oh Lord save me
My d*ug is my baby
I'll be Using for the rest of my life
(Using for the rest of my life,oh!)
Don't blame me, love made me crazy
If it doesn't you ain't doing it right
(Doing it right,no-oo-oo)
-Don't blame me, by Taylor swift
Tell me how you did, let me know if you had any voice cracks or anything!