Yeah I know what you mean… There is no violin teacher where I live, so I have to learn on my own as well. I find the webinars very helpful to get tips about fourth finger, when to keep fingers down etc.
If you’re thinking about posting a video, don’t hesitate. I posted a video too and the feedback I’ve received really helps a lot to improve! I don’t think you have to play your piece perfect to post a video. The sooner you post a video the sooner you receive feedback and you can start working with that! I wish you good luck and hope to see your video soon!!