The only thing I notice about the audio is that with your face cam, it's synchronization is off by just a bit. I would recommend putting a delay on your webcam by just a bit, if possible. Also, it appears as if there is some sort of sound glitching a lot in the video. I am unsure if this is from the video you are reacting to or if this is from your end. If it's from your end, you may want to look into that a bit.
Otherwise the audio is great in my opinion!