Your white noise problem is already fixed based on what i've heard with your other recordings, so what I can say that will help is to try recording voice and guitar seperate.
It gets a better sound. But if you want that delta blues style, you either have to deal with lots of whitenoise, or get really good equipment.
You are supposed to cover it...
not body-bag it.
Please contact me if you would like to use this in a project. We can discuss the details.