The reference is from the Harry Potter and the Goblet of Fire poster book. Harry Potter and all such characters belong to their respective owners and not to me. The original is lighter than the scan.
Time and materials:
9 x 12 smooth Bristol board
Kimberly pencils 2H to 6B
2B, HB and 4B mechanical pencils
.2mm mechanical Staedtler drafting pencil
.3mm mechanical Pentel pencil