Don't mount it too high. It's tempting to mount it at picture height, but most people find it more relaxing to watch if the center of the TV is around 102-114 cm off the floor (about eye level while sitting). However, some people have found that having the TV slightly higher can result in a more authentic cinematic experience and can make console gameplay more immersive.
If you're running cables in the wall, buy quality cables to prevent interference from power wires and other wiring in the walls. Once you get this mounted, you don't want to find out that you have a problem.
"Future Proof" your installation by including a HDMI/CAT5 cable (or at least component cables) through the wall, even if you are not using them today. If you just run S-Video or Composite cables, there is a good chance you'll want to upgrade later.
Cut a piece of cardboard to the dimensions of your new TV and use it on the wall to get an idea of a good position.
If you're mounting to an uneven surface (like brick or stone), cut a piece of MDF or plywood a little bigger than the mounting bracket. Securely and properly mount it to the surface first, then mount the bracket to that.
Save money and time by using a surface mount conduit to hide or camouflage the cables between between AV equipment and the TV. This means you won't have to spend lots of time and money fishing cables or re-plastering at a later date when you need to add new cables.
New power outlets and/or data cable outlets are best positioned above or below the TV bracket (but still behind the TV). Power outlet boxes must have a closed back; low voltage video/data cables can use outlet boxes that have an open back (this makes running additional video/data cables easier after the initial installation).
Use a laser level to determine where your wall screws need to go. You have less of a chance of making a mistake than using a spirit level and pencil.
If you want to hide all of your audio video equipment out of sight or in another room, you can install an infrared receiver to relay your remote controls' signals to your out of view equipment.
Consider running wires through the wall for all of your TV inputs. It may cost more, but you never know when you'll buy that new Hi-Def 3D Blu-Ray player or games console.
The best tip we can offer you is to call BlingStallation for a professional installation!