I sometimes like it when there is an author's/artist's note at the end, with a link. Like, "click here if you want to see my thoughts on this piece".

I don't like it when I click on something like that and all it is is what's wrong; I like them to be more commentary-licious, although they can definitely include what's wrong! Something like: "here's some stuff I tried, I don't think this worked, here's what I thought about this".