Before drilling mounting holes, measure your seated eye level, usually between forty two and forty eight inches from the floor. Use painter's tape on the wall to mark where the TV center should align. Simulate the TV size with cardboard to visualize proportions and sightlines. Test viewing comfort by sitting in different spots and checking for glare or awkward angles. Ensure wall studs or secure anchors are in place for safe mounting. Planning with these tests prevents costly mistakes, improves comfort, and guarantees a professional installation.