If you want to show us what you can, sure give it a try. This community is here to help and not to laugh at anybody. And when you’re insecure who sees your video you could always set it private (at least on youtube I know this works) and only share the link in the school. Also I think you should not worry too much about the sound quality here in the first place, because the riffs are a method for you to track your learning and showing us how you improve over time, not about creating a perfect video.