If you find a difficult phrase, you can comment on the YouTube membership "Osamurai-bu" entry.
You can also refer to these.
It helps you to understand how to play.
http://osamuraisan.com/news/2637
http://osamuraisan.com/news/2683
Capo = 2 Half Step Up Tuning(Mini Guitar) and drop D(D#A#D#G#CF), fingerstyle beginners can play.
If you have a hard time playing, consider raising the capo position.
There is no problem with shaking the rhythm. It's a good idea to practice so that it sounds like you're "shaking it on purpose" even when the fingering is difficult.
There is a possibility that it will be recorded with commentary later in music collection etc.