This how-to will show you how to decrease in single crochet. Insert your crochet hook into the next stitch.

Wrap the yarn around the hook and pull it through the stitch. There are now two loops on your hook.

Insert your crochet hook into the next stitch.

Wrap the yarn around the hook and pull it through the stitch. There are now three loops on your hook.

Loop the yarn around the hook again and pull the yarn through all the loops on your hook. You have now made one decrease!