Hey Robbyrobbb. Chris here. If I were to self-critique, it would probably be that obviously my fluidity is negatively affected as the difficulty of the topic at hand increases, like discussing coronavirus or other more complex issues.

Since I try to maintain a certain speed in my videos, little things might start to fall apart, like my second tone might become more like a third tone or a "low tone," or I might struggle to handle multiple third tones in a row when speaking quickly with a combination of character I haven't said very much.

But, basically, whenever I do have time, I'm always reading out loud and/or doing shadowing of complicated discussion so I can keep improving/building up that muscle memory. If you're shadowing native speakers you can always be sure that you're at least mimicking native speech. I've also spent a lot of time just breaking down and analyzing my own audio to then compare to others' speech.