Before committing to TV placement, use painter’s tape to mark the TV size and position on the wall and sofa to test sightlines. Measure viewing height and distances while sitting comfortably on your couch. Check for window glare at different times of day. Assess wiring needs in the nook versus above the fireplace. This low-lift mockup process gives you real-world insight into comfort and functionality before investing in mounts or built-ins.