Skyetic said:
The shading is a bit off, picking out a point where the light is coming from always helps :)
I think points are good honestly,but dispersion of light in air is not visible-I think it lacks glow effect.
To elaborate:
In daylight a dispersion is not visible cause light is white.
But when light source is colored(aka not white),green in your case,that dispersion is visible trough air.And I think that shdows made from colored light are not ony dark grey,but it gets very light hue of green(in your case).
Summer Month: 1 
Night 
Earthquake Moon: 
