I guess one way to get it started is to provide a bit of self criticism of the image one has just posted. The weekly challenges are a great place to do this. It's funny because as I've improved I frequently know the flaws in an image before I post it. Folks here have a good eye. On a Neowise shot I shared the foreground was blurry because I shot it on a sky tracker. I was impressed that someone picked up on this. Only someone here would. And last week I posted something with obvious pincushion effect that I knew was there. Again, a discerning eye caught this. In both cases I was impressed. Of the top 10 favorite images I've taken each has technical flaws and folks here will see them. But an image is the sum of its parts and must be enjoyed that way. A little C&C won't detract from this.