Inside and Out
The backgrounds for your animation are amazing. They're beautiful with nice colour and awesome lighting. The character designs are also pretty great. But the voice acting actually *damages* how good your animation looks. I'd suggest erasing the voices and getting better sound to cover it up. If it's modeled after a video game, it would be fitting to have some Japanese-speaking people doing the voices with the English subtitles remaining underneath.
FFOVGuardian is right: get some female voice actors if you're going to have female characters. It's bad enough we can tell it's you doing all the male voices (which don't fit). But the girls not speaking at all just compounds the creepyness.
Overall? Superior visual, substandard audio. Please keep trying, though, you're very talented.