This is an illustration made with fabercastel pencils and a picture printed out, from an A7 size sketchbook.    
The illustration is Raoul, a character that I've created.He's a guy who's glueing massive adds in the Parisian metro. But he secretly dreams to become a painter. On the other side of the page, I've took the picture in Paris, in the metro. I really liked the contrast of the wall and the sign which has been printed out on paper.