Do you ever sign a poster/book/whatever and mess up and then get worried that some poor nerdfighter is going to buy said object and people will ridicule them buying something with a fake signature (because it is messed up)? I feel like I would end up buying back my own stuff if I ever got famous because I didn't want to sell stuff that i didn't do a good job signing. (with that said, every signature I have of yours is impeccable!)
Yes. I worry about this a lot. When you spend three months signing for eight or nine hours a day, you have a lot of time to consider your signature and the relationship that people might have with it.
That is why, when I deliver what I feel to be a subpar version of the J Scribble, I write a secret URL beneath that signature, which links to a video of me apologizing for the terrible signature.