I have been mewing on-and-off for over a year now, sometimes softer, sometimes harder, and I notice my nose has tilted to the left. The bridge has a curve to the left, and my chin also looks more asymmetrical. I have a narrow palate, so I have trouble placing the whole tongue on the roof. Have I been pushing on one side more than the other? Or has mewing increased pre-existing asymmetry? What should I do to correct this?