I used graphite pencils on A4 bristol board.
I'm not sure how long it took exactly, but I started it three weeks ago and thats the longest I've spent on a drawing.
Here's the link to the photo that I used[link]
Thanks for looking.
Thankyou very much Louise. If you mean the hair at the top of his forehead, it was just drawn in with a fine mechanical pencil.
The hair on the right of his face was done by filling in the area with pencil, then using a sharpened pencil type rubber to highlight the lighter parts of his hair, then I used a mechanical to outline the highlights... if that makes sense?