How can you make your voice sound better?
Take vocal lessons, youll use your voice in different ways and sooner or later your voice will start to change because you will be opening a lot of vocal boxes.
Simple, just - slow - down. Also, try to see if you can deepen it.
Well if you learn pitches for notes, and get vocal lessons you can improve. But yet again if youre really bad, and improve you still won't be that great.