LOL. Your case is probably a little different since you make such intricate stuff. Your YouTube videos could be more candid things like you said - behind the scene type things. You know there are dozens of thousands of people that would love to do some of the things you do but don't know how. You can do little micro tutorials and vlogs. Vlogs could be about how you're proceeding with an ongoing project. What are your set backs, etc. People love stuff like that.