Light Drawings...

One of my choices of areas to draw was a ceiling corner of my room...At 11 30 PM the corner looks almost like a flat surface...There is practically no light except from the street lights and they cast very small shadows...There is an extra part of wall that juts out from the ceiling which is a bit darker then the rest of it at this time...If I were to describe this to a blind person I would have to say that you could only feel your way around...A person with sight would experience this the same way as a blind person...It feels as though my site has been taken...