If you want to improve upon what you already do, and I think other people already suggested this, your could work on the light in the room (you and what you show are consitently in the shade somehow), and on highlighting/zooming on the area of interest, particularly when showing things as tiny as a reed. Maybe on a regular computer it is not a problem, but I watched your video on my cell phone (which has already the biggest screen I have ever seen on a cell phone), and I could only guess the location of the markings you made on the different areas of the reed.
Good vlog otherwise.