Nothing wrong with telling friends about your boo-boos, that's how we all get some learning - no matter how long we have been doing stuff like this. I used check lists - we called them punch lists - on the job, and carried the habit over to my other endeavors, although not to the degree of the ones at work. At times, when I was lazy and didn't lay one out, I might get lucky and not have any oopsies, but most of the ones I have had were from not using some means of double checking my work.