Just listened to your song. Very nice. It has an Al Stewart quality to it.
SoUnds like you are getting a handle on the overall levels problem.
How are you recording your vocals, and that lovely "whale cry" guitar?
I'm guessing single mic to a stereo track.
Don't do that. It gives you 1/2 of a stereo track, and pins the sound to the left side.
Record to a mono track. ie, select Left Input-Mono. This will bring your vocals to the center, where they belong, and allow you to move them within the stereo field.
You can salvage these tracks by splitting them into mono tracks. Delete the right side track, as it contains no data.
Play with panning on the remaining track, and you will hear the freedom of movement you now have.