In this pic I drew the northern lights (just in case you do not know what the picture is XD) This isn't my full potential, but I tried! Enjoy the picture
Do do so much glitters, simply go to pen, pick your color and I will show steps.
1) about two spaces down from opacity on your pen sizes and options should be spacing. Do 100% 2) underneath spacing should be scattering. Also do 1,000% If that stuff is not two spaces down then check the next row.