UK-based illustrator Carne Griffiths creates these striking portraits with uncommon mediums such as tea, brandy, vodka, whiskey, graphite and calligraphy ink. His drawings most frequently explore human and floral forms, as says he’s “fascinated by the flow of line and the ‘invisible lines’ that connect us to the natural world.” The four pieces above are part of a limited edition postcard set just released by Griffiths, each of which comes in a fancy custom-illustrated, wax-sealed envelope.