Well...
The performance, I'm sure, isn't half bad. However, the recording... sorta is. I'm trying to give you constructive criticism here when I tell you, you should really get better recording equipment.
Just turning the volume up unfortunately didn't work, since the original recording was at a very low level of decibels. I'd say you re-record with a better mic. Ask someone in your area to help you. Once you get a neat recording, you don't have to do much to make it sound great. Like i said, the performance isn't bad, it's just the technical quality of the audio