I am fairly surprised that you had no vocal trainings, sounds like you got quite a talent then! Well I can tell you tips and things through a forum, but that can never make a fraction of the improvement you can achieve with a (good) teacher.
Singing is all about feelings, both in a technical and an emotional way, you have to feel things in your nose, in your mouth, in your throat, hell even your pants when I really think about it!

And also, singing is performing, it is an art, it is a very powerful "tool" for expressing feelings and sending messages.
When you are singing, you are singing for a crowd, you want yourself heard. When you sing like I said you did on that record:
Quote from: Ray on January 07, 2012, 06:13 PMAt some parts, I could hear that you didn't let your voice loose, you didn't let it go, you didn't create the proper space for it, thus not making it able to unfold and have it break loose, you know what I mean? Like sometimes, it feels that you didn't even open your mouth or blow your vocal cords strong enough for your voice to expand.
That part, your message is not received, the audience will not hear it, they will hear someone with no sound! It's like when you play the trumphet, you blow the damn thing, not just whistle in it, right? Same thing with singing, you have to make your message, your expression heard, it is very important, otherwise, you will feel the crowd turning away from you, which makes you nervous, lose your confidence and that affects your singing instantly.
On a more technical term, it is a general fact that sound needs space to properly expand. That doesn't mean that you can't sing opera in your basement...

That means, that you have to create space in your mouth so that it expands and reaches out, grabs the listener by the balls and gives off a message of "damn, who's that guy?", that sends shiver down people's spines, that makes them listen! You have to practise a lot. Don't be shy, because you will start singing softly -> above mentioned happens. And if you keep practising softly, you will never have the feelings.
Basically, you have to open your mouth, big, like when you yawn! Just yawn, and note the feelings you have in your mouth. That is the feeling you have to get when you sing, you have to learn how to control those muscles and practise the feelings. Sing powerfully, send the message, look me in the eye and say: listen to me asshole, I'm a f@#!ing singer alright?!?
Ahh... singing is just so f@#!ing great man...