Great tut but I am a huge noobie and am having trouble on little effects. Could you help plz

sry..im having trouble with smoke..it's not render so you want me to magic erase the backround ?..and how do you invert the colors Ctrl-l, then this screen pops up with a chart?...and for the ''color lights'' I pick a 100px brush with but what master diameter..?and why do your look so ''neon light'' like