Voice acting has very little to do with the kind of voice you have and has everything to do with how well you can act. And the only way to get better at acting is to study it from as many sources as you can and practice, practice, practice!
One source of acting inspiration for me has come from the writings of acting coach, Mark Westbrook, of The Acting Blog. Since his teachings are very good, I’ve decided to put a few of my favorite posts from his acting blog here for others to benefit from:
Within your own character
Preparation
The other
Uncertainty
A handy guide to acting emotions with Steven Seagal
(This one’s funny 😀 )