It is brilliant. One detail though you must know.
Solinari (white moon) is the largest.
Lounitari (red moon) comes next and then Nuitari (black moon). But that is just a detail. This artwork is simply great.
You can see Nuitari? That's good Simple but effective. The composition is too linear, but the star makes it all right.
Very beautiful... It brought me back to the times I first read Dragon Of Autumn twilight...