Dick, with the best will in the world, that video is very low quality, it’s way too dark and, importantly, the viewer can’t see your concertina most of the time, and then when they can, you may as well be holding up a biscuit tin. Try recording it again with a better camera and a bit of light in the room. And if it is supposed to be a tutorial video, maybe focus on the concertina and not your face?