I completely disagree with the "eyes on target always" method, but that's just IMO.
Your discs stall out real quick I'll bet - look at how nose up they are out of your hand. That's from not getting the weight fully transferred forward. You start to, but you then stick your heel out and dig it and that's like throwing on the parking brake.
I'd start by slowing down your approach. The approach/run-up means nothing if you try to get speed/momentum but then slow it down before you throw, plus you use up energy fighting the momentum you generate. This will help keep your chest level instead of pointing at the sky through the release, and your chest positioned level helps keep the nose down.
Hope this helps!