Installing TV wall mounts can be a difficult process. They are large, bulky and heavy and you need more than one person to install it. Getting it straight is imperative but also difficult to do on your own.
try to use the skeleton type of holder for that... i actually i forgot the exact name of that mounts but i see it on the department store which also capture my attention for my television too.
Follow the instructions carefully that come with TV brackets. There are many youtube videos that can be used to help aid you visually and many websites with step-by-step aids.
TV wall mounts are meant to be very sturdy and are suppose to hold up large heavy televisions. Therefore they have to be steady. Most can hold up to 50 pounds.
The ideal is one that's comfortable for you to view, without having to tilt your head up or down to watch. Personally, I'd think between 36" to 48" give or take some and depending on the size of the...