People tell me that I sing really well, but I sing VERY quietly. I want to learn how to scream my words/sing them with more emotion without sounding off-key.
PRACTICE!
WARM UP!
First and foremost, NEVER push your voice to go higher if you can’t. If you do you could possibly hurt your voice and damage it for the rest of your life.
If you have a naturally lower voice there are a few techniques you can use to make sure you can sing the high notes.
Make sure your posture is good. Imagine a string is attached to the top of your head and someone is pulling it so that your neck is straight and make sure your shoulders are back. Don’t stand with your feet shoulder width apart unless you are comfortable that way. Just make sure that your stance is stable and that your knees are not locked.
A way that you can stretch your voice higher is to practice your falsetto (your head voice). It’s hard to explain what exercises to use in typing without showing you, but I’m sure if you went to your director or another singer they could show you what exercises are appropriate. In practicing your falsetto you should be able to go fairly high which over time will stretch your range and soon enough you should be able to transfer that range into your chest voice.
When singing always make sure your tongue is touching the back of your bottom teeth. When singers retract their tongue into the back of their mouth it can disable their ability to sing higher because their throat is closed off. Doing this will also ensure that your tone sounds rounded and full rather than pinched, as it sometimes can sound when reaching for those high notes.
Some tips I give my voice students as just a rule of thumb are to never lift your chin and keep your eyebrows up. When you lift your chin it can be damaging, and you definitely don’t want that. Some singers think that by lifting their chins they can reach those high notes, but it is the exact opposite. It is just a mental thing. Which is why I suggest the latter of my tips. When you keep your eyebrows up you are kind of tricking yourself into lifting your soft pallet which will help you reach those notes and will help your pitch from dropping.
As for singing with more emotion, you really just have to feel it. Don’t just sing technically, really feel what you are singing. If you feel it, everyone else will too.
I hope I have been of some help. Good luck!