How To Extend Outlet After Tiling Backsplash How Do You Extend Electrical Outlets To Be Flush With Glass Tile Backsplash.?

How do you extend electrical outlets to be flush with glass tile backsplash.? - how to extend outlet after tiling backsplash

I am installing a backsplash of glass mosaic tiles in my kitchen. There are 3 sockets, 1 light switch I need to tile around. I am looking for ways to expand opportunities so flush with the piece once it is completed and the plates will fit on the front panel. All IDE?