wow- thanks for the nice comments everyone. They are acrylic on those cheap little canvas boards. I mod-podged on bits of newspaper, scrapbooking paper and some fabric here and there. No sharpie- just black paint.
Funny you mentioned doing a large one- here's one I did today along the same lines...

I have no clue what I'm doing with them. I have so many different styles- I guess I'll just add this new style to the heap of mish-mosh.?