Just really quickly made a circle planet using the dot pattern shown in the video. I do notice that unless I am zoomed in at 300% I see the tiniest lines in the pattern where the edges meet. It doesn't appear to be there when I export, but it sure it annoying. I am unable to make the line pattern at the moment, for some reason it isn't reading the transparent square.
I really liked all the tips you posted. Obviously I will need a bit more practice with them, but it's great to see ways to use Illustrator entirely.