At my age I've learned to say I don't have failures, just varying degrees of success. My 8 yr old grandson was over for a sleepover while his parents had a night out. We built an angel and he painted her. He messed while painting and got so frustrated he started to cry. I said Whoa, part of every project is you have to figure you need to how to correct for the errors your going to make. I took him over to the eliptical top to a cabinet I'm making. The front looks great. I showed him the back. See that piece of different looking wood? I asked him. 'Yes' he said. That doesn't belong there because I messed up. But the front looks good, doesn't it? We just have to figure out how to re-paint the angel and make her look good. His newly re-painted angel made one 8 yr old very happy and was another example of a varying degree of success.