take what you have, and run it out to a good sized speaker or amp (but without much coloration or distortion) and place it at one end of a room. then set up your mic at the other end of the room. begin experimenting with levels first so it sounds good coming out of the speaker, then move the mic closer as necessary. i have no idea what your room is like, but if the speaker or amp you use has good overall frequency response (equal to that of the mic, anyway), that MAY improve the sound a bit. room reflections will show up and the vocal will be easier to swallow. or i could just be talking out of my ass, in which case you should use a shitty VST plugin.