Okay, cool. I don't want to be the person who jumps in with a bunch of unwanted critique. For purpose of this commentary, I'm assuming you're the person executing the takedowns. If not, change the following "you"s to "he"s.
(For reference, my understanding of leg entanglements & takedowns comes primarily from 20+ years in BJJ and using them in sparring with everyone from karateka to capoeristas to wing chun practitioners to pro MMA fighters.)
The most important concept when using these techniques is making sure that you have control of your opponents distance. From the very start of the technique you need at least one frame keeping them from getting too close (so they don't squash or bypass your legs, get mounted on you, or start punching you in the face) and at least one hook keeping them from just pulling away and disengaging. The frame is more important, because having them getting away is better then having them on tp of you punching your face in.
You do okay with establishing your hooks, but on every single entry you take at least a second or two to get your frames in place. Against someone who knows what they're doing or even someone with good natural instincts, that will get you mounted and punched in the face repeatedly.
At 10s and 39s in the video you get up after sweeping your opponent with a backwards roll. This is too slow. If the person you just swept knows what they are doing they will be back to their feet before you are. You do a better job coming up to control after your takedowns at 1m4s and 1m49s. I'd recommend you add a BJJ style technical standup to your repertoire for maximum speed and safety when getting up. If you intend to follow up the attack (as opposed to fleeing), you can control your opponent's feet while performing the technical standup to prevent them from getting up at the same time.
For the tomoe nage at 28s, you'll want to scoot your butt in closer to your opponent as you sit for the throw. If your opponent has a good base and you sit down as far out as you did, it's easy for him to stuff the throw.
Be careful about shooting in with your head down and your eyes on the mat. It's a good way to get choked, kneed, or face-planted. This is a really common problem. Even pro fighters will do it sometimes in the heat of a fight when they get tired. If you train that way when you're doing a slow flow sparring session like this, you'll definitely end up doing it in a real fight.
For the takedown at 1m21s you're using one arm to control and pull down both his legs. That's not enough control. If he had any kind of decent base he would end up in mount or at least top half guard where he could beat on you. Even assuming his base was really bad, you end up just laying next to him punching his legs. You need to transition to a top position so you can control him or disengage.
At 1m39s I like the transition from low punches to single leg takedown. However after you pass his open guard you end up falling to your back for no good reason. The whole point of passing his legs is so you can control your opponent. If you flop over like that he's going to end up on top of you dropping down elbows.
At 1m49s the final sweep only works because your partner steps in with zero base, literally putting his feet and knees together so you can easily twist him around and over. You don't want your sparring partners doing that because you'll get a lot of false positives about what works. You don't want to just be able to take down klutzes. You want to be able to take down people who have good balance. Remind your partner to keep a solid base so you can learn what really works.
