In your shadow boxing video I couldn't help but notice your knee strikes.
You bring them up very high, which is good, the best place to hit is just above the six pack where there's no muscle to protect. My issue is that your knee isn't bent enough to get the best result at that sort of height. Dieselnoi would do a knee where he would also shin bash his opponent a lot, but that was more for kneeing as a close range. If you're stepping in I would try to exagerratedly bend the knee for now just so that you get into the habit of bringing into a point. Also stepping off line before landing it so that you can generate more torque and power into it.
I'd also recommend a lead teep with a bit more stab to it, some guys like a long lead teep that really pushes back, I'm not to keen on it. IMO a lead teep is for keeping people off of you, a rear teep is for pushing guys backwards. So a quick stabbing teep would be good for keeping people from getting too close, so you can make the most of your punching.