This is an ink drawing that I've entered in a competition...
A4 CP watercolour paper, Faber-Castell Pitt Artist pen, Indian ink, dip pen, waterbrush.
It's based on some photos I took at Twycross Zoo of the Humboldt penguins. The main drawing was done with the marker pen, and I went in with the Indian ink with a dip pen, plus waterbrush, to give it a bit more pop.
If you'd like to have a look at the competition entries and maybe vote for your favourite, go here