Lenders don't give you credit for what you are currently earning. They average your income from those sources over the last two years, then add that to your regular salary or hourly monthly income. If you want a shortcut that is usually close, get out your W2 forms for the last two years.
Mirror is simply made by taking a slab of plane glass then coating it on one planar side with a coating of silver which provides the reflecting part, but due to corrosive nture of silver the same side is coated with a layer of anti-corrosive paint to protect layer of mirror.
To produce mirrored glass, a metal coating is applied to one side of the glass. The coating is generally made of silver, aluminium, gold or chrome. For simple mirrored glass, a fully reflective metal coating is applied and then sealed with a protective layer.