I cover the whole screen top with aluminum foil taped to edges. Then using a sharpie, draw outline of light fixture. Move light fixture out of the way and use scissor to cut outline out (leave a small gap for air circulation).
Mist both morning and night keeping the shredded coco slightly damp (clumps in fist but no dripping). If humidity gets above 80%, remove more aluminum foil, until it oscillates between 70-80%.