Lighting is very important in Feng Shui. You should allow natural light to enter the house as much as possible, as this creates positive energy in the house. Keep in mind that;

All artificial lighting should be subtle.

Any harsh lights should be got rid of.

Bare light bulbs should not be seen at all.

A light bulb directly above the head of the bed will turn the sleeper into a nervous wreck. If hung above the centre of the bed, it will cause stomach disorders. Instead, follow the good Feng shui practice of placing the light to the side of the bed.