In my singing group, I have been given a solo in I Will Follow Him - Sister Act. It's where the song starts to get more pop-like and I go off the main song and start singing up high. I'm really excited to do itbut I always get nervous. Okay, this is probably really confusing, as I'm not good at explaining...

Let me try again. Okay, I sing the bits in the brackets and do some 'Ooo' s and 'Yeah' s and 'Love' s at the end

(Oh yes I love Him)
I'll follow
(I'm gonna follow)
True love
(He'll always be my true, true love)
Forever
(Now until forever)
I love Him, I love Him, I love Him,
And where He goes,
I'll follow, I'll follow, I'll follow,
He'll always be my true love,
My true love, my true love,
From now until forever,
Forever, forever...

There isn't an ocean too deep,
A mountain so high it can keep,
Keep me away, away from His love

Okay, well I can sing high, but I would like to learn how to do it naturally. Also, I always get really nervous before I go on stage, please help!

Thank you for putting up with this extremely long question!