Yes I know that this doesn't look like a real galaxy. I've been trying different approaches in the tutorial, but the best way to really depict a galaxy seems to be drawing one in photoshop :/

The twirlfilter doesn't yield realistic results and it lacks depth. And in this one it is WAY to strong, even at decreased settings it twists exremely much. However it's fun anyway

The star density is as it is because I didn't bother to much with it for this test.