Recently attempted a metal style banner logo for "Blackened Slugs" a review website and distro in the US, specialising in Doom/Drone/Black metal genres. They do distro for some Monarch (French drone doom) and Grey Daturas (Australian instrumental noise rock) records in the US. Two bands I really dig. Hadn't done a metal logo since high school, more than 10 years ago.
The banner art was was done freehand in black indian ink & wash on Canson watercolour paper. I used a vintage ruling pen, and scrawled the ink freehand. The hard whites are scratched into the paper. The crusty bits of dried ink that collect at the mouth of the bottle were mixed in around the edges.