I think That I may have done this, I'm not sure.

It was dark outside in the dream so I made my hand put out light like a flash light. It looked just like the real thing. Then I wanted to try something a little more difficult so I put my hand to my chest and formed an orb of light. If I twisted the orb to the left the light would dim, to the right it would get brighter. I twisted it so much to the right that the whole area lit up and then the sky started changing to light blue like it was becoming day time.

Did I really change the light levels?