I chose a hand sketch for this enlargement exercise. I overlaid a grid on a digital version of the image, for the sake of convenience, rather than adding a grid to the picture itself. The challenge here, I found, was to preserve the spontaneity – the “sketchiness” – of the original picture so I couldn’t replicate each pencil stroke exactly. I lightly pencilled in the contours but then “sketched” the final result with charcoal – for a thicker, bolder line. The top of the thumb is a little problematic but overall I’m happy with the result.