A collage from my sketchbook.

I was flipping through a magazine and came upon a beautiful photograph of ancient ruins in the desert.  I was completely captivated by the colors.  I ripped up the picture and created a base.  For some reason, as I was contemplating this base of beiges and dark browns, this half-moon shape was stuck in my mind.  I thought bright reds would beautifully complement the muted colors of the desert palette.  It turned out rather nicely, I think.