I did this all on New Years Eve, it was on display for a long time at the school though so I couldn't upload a picture xD

I believe the board is 14x20 inches (that might be another one though).

Done with watercolor paint and markers. Haru's horns as well as a few other spots are shiny. The castle was referenced from photos of Himeji Castle in Japan x3 This picture is cropped... owo