Did you ever set up to take that really cool shot and end up doing something stupid like have your footing slip, or have a tripod unlock and twist, or basically have the unexpected happen that actually made that cool shot even cooler? Well, like most, you probably weren't thinking that at first ... you were probably thinking something more in the lines of "^$@@!!&&%$^!!". Right? That's my usual reaction until I start processing files. Then you end up seeing the art in the mistake.   More than once I have taken shots that instinctively I would hit the…