The look in his eyes shows his drive to kill and he’s ready as well as killing the old woman shows he’s ruthless and cold blooded. The dressing of his arm shows he is prepared and used to these type of situations.
It's like using a simile or a metaphor you are building its character by describing it , Example: That dog had really big teeth and it was almost 4 feet tall.
And here's a version were I would use Figurative Language:
That Beast had huge teeth that could rip apart my car , it was tall as a giant.
Dose that help? <span />
