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I do if it's for commercial purpose like for cd covers or books.

I keep looking at this image and thinking. When I fall to sleep, there is a point in between sleeping and being awake where I can feel myself drifting away. Many times I get wild visuals during this time and of course also while dreaming. But that point where I am still passing between the two phases... Many of my visuals seem to be made up of stuff like that flying over her head in your image. Fascinating Gric!

Being aware of falling asleep is actually quite difficult to achieve. If you have this ability than you might want to try lucid dreaming. In this state you are fully aware that you are dreaming and this gives you the power to change the reality of your dream.