Please try to break this down to paragraphs- wall of words tends to turn most readers off!
Like the scenario, presented lots of possibilities to continue
One critique- you wrote "Unzipping her pants I reach down and feel the front of her silk panties" yet later you wrote "I pull my knife from pants and cut her jeans off. As I cut up the back of her leg to her ass I can see the tiny black thong she's wearing" Why do that when all you had to do is slide her pants off and toss them aside?
Overall I say this is a good start
Agree on a good setting and also a good, angry protagonist. I also like the tall, curvy, fleshy victim.
It's up to pisseddawg, of course, but maybe he doesn't want to leave her with intact clothing. She may have to do a hell of a streak to leave the venue afterwards. We shall see.