There are a lot of missed opportunities with the visitor's locker room. You have to go beyond stuff like painting the locker rooms pink. Put lots of comfortable padded furniture inside. Stuff to get the opponent to relax. Use soft lighting with all blue/uv frequencies filtered out to get the melatonin pumping. Play smooth jazz at low volume. Give objects non-uniform sizes to screw with spatial perception. For example, make the lockers vary in width by an inch or two. Put sound absorbing walls and furniture to make the place quiet.