You should know how to crochet following stitches:
ch (chain), sl st (slip stitch), sc (single crochet), and dc (double crochet)

Instructions are given in English language, American terminology and the pattern includes written and photo instructions.

Crochet hook: 0.50 mm

Thread: number 80 such as DMC Dentelles

Level: intermediate

Purple skull ornament has been made out of crochet thread number 10 and 1.50 mm crochet hook.