18x24 watercolor paper, technical pen and probably pastel pencil or just regular pencil blended with a q-tip. This was done for a friend who owned a wine and spirits shop, so I guess it's a vine. Or a tree. Whichever....
Digital is great -- for composition and color. But for line art? I don't think I can ever give up the fountain pen. This was drawn with a Sailor King of Pen (M) and Sailor 1911L (EF) fountain pens using Pilot Black ink. Yes, sacrilege. Pilot ink in a Sailor. But I have some Kiwa Guro arriving soon!
I drew these guys with a Pilot Custom 823 FA and Platinum Carbon Black ink. The FA nib has a good drawing width on watercolor paper - one of my favorites. It's a soft nib but I don't use the line variation, just some nice shock absorption with each downstroke. The Carbon Black ink is out-of-this-world good, though being pigmented I fear keeping it in too many pens.
"Lang may yer lum reek (a Hogmanay greeting, implying "May you never be without fuel for your fire!", but more literally translates to "Long may your chimney smoke!")" All this I corrupted and used to inspire me here.