Mid section of plywood. I put it in the fire for a bit, varnished it and it came out alright. The charred part looks like a night scene, I reckon

Played around carving into it with a box knife. I though that bit could look like smoke so I carved this. Took a long time and once the line's there it's there. I might add some charcoal on the shadow lines or get out the soldering iron and burn some more.