Brunette on the left, choking her with my bare hands as I kiss her neck and thrust into her. Girl on the right can watch as she takes her last breaths with a plastic bag taped around her head.
That chain that's around your neck, I'd firmly grab it from behind and twist it a couple of times like a garrote. That would surely have you gasping for air.
Oh I'd rip that blouse off of her and make it into a garrote, wrapping it multiple times around her neck until she's gasping for air while I bite into her perky nips