I also think the mistakes you make are worse when you get to that level. You don't make many at that point, but the ones you do make tend to come out of nowhere

I also think the mistakes you make are worse when you get to that level. You don't make many at that point, but the ones you do make tend to come out of nowhere and surprise you a lot more because you're not expecting to make them. Whereas at that conscious competent level you're still paying more attention to every little thing. Or there's those silly little mistakes you make just because you're not really thinking about the process and working unconsciously. Those things that you really should know better, haven't done for years but overlooked that one time because, you're just going for it.