I think it is great that you are keeping a blog of your progress and making videos.
I hope you don't mind but I took the liberty to analyse your audio:
The red sections indicates that you have clipped the signal, and this has created a lot of distortion on your recording. For future recordings it would be worthwhile seeing if you can reduce the mic gain, looking again at the analysis, I would suggest by quite a bit. We will then have a much cleaner recording on which to comment on.
I agree wholeheartedly with Artylady. Always practice with a metronome.
After 34 years of on and off practice I still practice with a metronome. I've found that after layoffs
tone remains static yet my rhythm always suffers.
It's good your documenting your practice. It's always beneficial to compare as you progress. It's equally important to hear yourself as well as listen to the pro's who have accomplished their quest to attain a wonderful tone.