What did you use to mix and master? There is a lot of dynamic range and just general bad levels. The vocals are so loud and then the instruments are not loud enough. I feel like you are trying to have this very natural, dramatic increase in volume, etc, but the range in which this occurs should be much less. I am not sure you are using the proper tools to get the job done. You don't need to worry about stereo image, you need to focus on the basics of leveling, compression, and mixing with reference track.