About my newest piece of ARTwork

This piece is Darkness Falls. It is acrylic on canvas, this painting took me about 6 hours from start to finish. I like to start a painting and work on it a little at a time. All the while setting it in a place where I see it everyday. and subconsciously I determine what needs to be fixed, added or removed. This technique helps me to take my time and really put quality work into my art. I just really like the mood of this piece. kind of an eery forest but it makes me wan't to know what is beyond. what is causing this greenish glow of fog? I am very happy with this piece