Joe, you can record yourself, either during a session, or set yourself up a solo session: the recording is available immediately after the session closes as an mp4. You can then hear how you sound, and try a few further short recordings, off session, until you get it as you want it.
(I did this last week for one of our band who always sounds like he's shouting down a very bad megaphone when he speaks, though his concertina sounds OK when he's playing: I suspect he IS shouting, and far too close to his computer microphone. Having sent him the recording, he'll hopefully be able to adjust his sound settings to being a bit easier on the ear for the rest of us!!)