This pattern is written in English and uses US crochet terms.

Christmas ball ornament is around 2.5 inches (6 cm) when finished.

The pattern uses:

• 1.5 crochet hook
• yarn weight fine
• foam ball (diameter is 2.5 inches (6 cm)) or polyester fiberfill stuffing (or similar).

You should know basic crochet stitches including

• chain stitch,
• slip stitch,
• single crochet,
• decrease,
• increase,
• magic ring.