How do I get the side mirror cover off a 2014 Mazda 3
 

I apparently dinged the passenger side mirror backing into the garage recently, and today, the right turn indicator stopped working. After I replaced the front bumper and rear bumper bulbs, none light when the right turn indicator is activated. The back brake light works. When activating the right turn lever, I get just the rapid clicking that indicates a bulb out.

I see a small scratch on the mirror cover. The BSM sensor works fine. I suspect the mirror turn indicator bulb has failed but I can’t figure out how to remove the mirror cover.

HELP!

Thanks,

Mel