Thank you for auditioning. I think you are better than you give yourself credit for. You just seem a bit nervous and possibly embarrassed or silly. Don't be. Animation is pretty much exaggeration. If you take a day for each role and practice it and break out of your shell, you will be surprise to see how well your audio clips come out. Trust me. When I started, I sounded like a zombie trying to act and sing, but after I got comfortable I got better and surprised myself.