I think haircut education videos are a great idea, as there are many people looking to save a few sats by cutting their hair themselves, or getting someone close to them to do it.

You may even find others here to share hints and tips with.

I don't think you have to worry about your job, if you do good work. I tend to go to a professional if I need a proper haircut for a special occasion anyway, because I feel it's worth it in that case.