Common mistakes include mounting the TV too high above a tall mantel, ignoring ergonomic eye level, and poor wire management causing clutter. Another mistake is neglecting adequate seating clearance and traffic flow, resulting in cramped or awkward spaces. Skipping integrated storage leads to a messy media area. Avoiding layered lighting causes screen glare or dull ambiance. Successful placement combines comfort, accessibility, and aesthetics within the nook’s dimensions to create a functional media center.