Mistakes don’t have to be mistakes, everything is subjective – a mistake to one person is actually a piece of art to someone else – Robert Rodriguez – 10 minute film school.
Never really appreciated that quote until recently when I forgot to switch my lens to auto-focus. The in-focus image was rubbish, but I really like this.
Just wish I could say the same about all my mistakes 😉
WeavingLight 
The second most popular page on my blog last year was an out of focus shot….but I did set it up that way!