1. Watch and learn how light behaves and moves.
2. a curtain can be a great way to diffuse natural light.
3. when using a reflector, avoid lighting the model from below.
4. keep an eye on how the atmosphere of a shot changes with the light.
5. arrive to the location earlier, take photos at sunset, sunrise, and blue hour.
6. work simple and with the light that is already provided.
7. shooting RAW is good because you can fix things after.
8. light is more intense during the middle of the day. 
9. handmade lamps will create a magnificent effect when combined with natural light.
10. having the light facing the subject is better than it not.