Hello everyone

So I'm pretty new to this, I've had my Mazda for coming up to two years and have had a small accident regarding the driver wing mirror..

Reversing into my driveway I let it roll back whilst straightening up and the mirror hit the brick wall and bent backwards
It all works fine, including the mirror, but the case is cracked/smashed somewhat on the edge. I'm sure this can be fixed by a simple removal of the case and replacing with a new one as it hasn't affected any of the mechanisms in it.

I would just like some advice/tips/walkthrough points before I go taking a screwdriver to it myself and end up doing more damage!

Thanks,
Sam