Painting a rather large surface may be easiest outside. I laid down a plastic tarp and used painter's drop-cloth for the actual backdrop.
I worked with two colors, a deep navy and an off-white, watering both down and mixing some for a middle tone. I painted in circular strokes to slightly blend the colors together into a cloudy atmosphere.
The upper right corner was lightest, and darker as I worked outward.
The tarp took 12-15 hours to dry (which could have been due to the humidity and dew that set overnight).
Drying backdrop from other angle- you can see the swirling colors a bit more.
I used 1/2 inch sand ply for the moon. I purchased a 4x8 foot sheet, but knew it wouldn't fit in my car, so had it cut down to a 3 foot width and used the extra piece to extend the point of the crescent moon.
The pieces were supported from the backside with 1x2 inch pieces of wood that were glued and attached with small wood screws.
The front surface was then primed with Kilz and then painted with the same off-white used for the sky.
A sunny yellow was used to add surface texture and color variation to the moon.
The yellow was mixed slightly with the off-white and pounced onto the board.
As the paint dried, I sprinkled a fine pearlescent glitter over the moon and then sealed with polycrylic.
I'll be sharing the final shots from the magazine soon, so be sure to check back!