I used one of a whole bunch of irregular boards I bought from Walnut Hollow Farms. In this case the irregularity was some missing bark, so I just knocked off the rest. I need to sand the edge smooth, and will probably burn it, or leave it natural. I used a Walnut Hollow Farms pen, and the shading point mostly. The small stars were done with the stencil cutter point, the larger stars were the cone point, and the spikes on these stars were done with the mini universal point.
Color comes from a set of colored lead art pencils.
I used Q-tips and water to smear the color a little more. You can use some of the links in my B.R.A.S. site to find a real photo for comparison. I had to free-hand the Moon as the original picture didn't show it as seen here, but I thought the final result looked more like the Sun rising behind a mountain. Unfortunately, since I was free-handing, I messed up the Moon a little. It's not perfectly round.