The skylight can be adjusted but also remember that if you have a dark blue sky your scene will be lite with that darkblue or what ever color you have for the sky or background.Use a combo of lights a low setting in the skylight and maybe a bulb or infinite light. A bit of practice will get you a great render. For glowing objects use the Multiply in the shader and use the new "Scale" slider and not the "value" slider.This will give you much brighter lights Ringo