Step 3 - Getting rid of those wires:
Visible wires could be the make or break of your TV Installation. Here are your options:
Run your HDMIs and Power Cables through your wall.
This requires us to make two holes, one where you want your wires, and another behind your TV.
Add and outlet behind your TV. (MOST POPULAR)
This solution gives you the cleanest look as is requires no holes. It will look as if there was nothing done to your existing wall.
External Channel.
This option is mostly used for concrete or very special cases but does provide you with a cleaner look rather than leaving your wires dangling.