I needed a "moon effect" for a night scene and made this low poly moon. It turned out fairly well
so I thought I'd share it. Very simple sphere & texture. Also made a "night cloud" to place near
or around the "moon". Placing lights just where you want them gives very nice surreal effects.
Made two "moons" one static and one dynamic (dynamic one meant only for using dynamic shaders
but has other possibilities)

Play with the scale settings, lighting and height to get the effect you want.
The "moon clouds" like having low lighting under them, not over. If anything
is amiss let me know.
Have fun, best
My games never have bugs. They just develop random features..
Lots and lots of random features...