For these Grahams Up the Tree drawings I used a Pilot Custom 823 with FA nib. This pen is legendary. It has a very soft nib and a giant vacuum filled tank of ink so you can write and draw for days.
"At 6 o'clock the window squeaks and mum calls time" from Graham's Up the Tree. It must have been strange for mbpardy to see his his story interpreted through my illustrations... but page by page these characters came to life, with both of our contributions somehow adding up to something bigger.
Australian author mbpardy & I have a children's book coming out soon called "Graham's Up the Tree." This illustration from the book makes a good countdown to release.
(black biro on 74mm x 97mm memo paper) If that was being advertised in London, it would probably go for half a million and be split up into flats (apartments).