Awesome picture by the way.
This is what a creeper would like in real life. If they don't have the ability to explode themselves as a suicidal act, they look like they could literally EAT you. Look at those teeth! You made them look like they could also consume your whole body and slurp your blood. I would back away if this was in real.
Very nice drawing: Very detailed, very terrifying, and very awesome.