No pictures to post, but we all make mistakes.
Elsewhere, there's a thread of two of my failures. Cheeses that contain flaws making them unsuitable for commercial sale. Also somewhere deep down in the caves, there are a couple of wheels with considerably large surface flaws due to a lag before I got them pressed (oops!)
Once I took too long to get the cheese up to temperature, that's not good.
One time I had one of my forms break (these are adjustable forms with wooden blocks holding a string for adjustment. The block broke off while I was adjusting the form size)
I guess failure in this instance depends on your goals. If my goal is to make cheese that tastes good for personal use, then I guess I've got a perfect record (I have never thrown out a cheese). If your goal is to produce cheeses that meet a high standard for commercial sale, then I have plenty of failures and will continue to have failures.