what should you do before singing to help it sounds better?

Vocal exercises

Gargles with egg whites or even cough syrup (don't drink it, just gargle and then spit)

- This will make your voice sound clearer

Drink a lot of water (room temperature)

A shot of brandy (it will warm up your vocal chords instantly)

Don't yell (EVER!)

Facial exercises

- This actually helps you project your voice better and makes your face muscles feel more relaxed while singing

Breathing exersises (Breathe in util you completely fill your lungs and hold it for 10 seconds and then release as SLOOOOWLY as you can)

Hope you find this any good :) I'm a singer myself and I also sing opera.

You could always do vocal exercises! Just say LA as high as you can go (While it still sounds nice) Then go lower and lower and lower until finally you get to LA in the lowest voice!

(I'm sure you know about that! :) )

Also, you can go to youtube and type in vocal exercises...

practice makes perfect. there are also certain vocal exercises

water and warm up exercises

have a couple of drinks to loosen up your courage.