Did another 5-color challenge, and pulled a night beach out of my head.
(colors were Copic G21, BG72, BG75, Y11, and Prismacolor PM-45. Also used a grey Copic fineliner, and a navy blue Micron pen for linework.)
(This is a scrap of the Bristol board I usually use. You can see the embossed watermark on the upper left.)