I use a small paintbrush to to make the stars outline. I followed through with the blur tool to give it a faded effect. For the moon I used the ellipse tool. I filled in the circle with a soft white color. Then I used the paintbrush again for the black shadow. A good way to get the fade effect is with the fuzzy tool add-on. For the spots on the lighted side I used the spray-can tool set on a dark gray color. Just lightly spray in spots to blend in.