Here's the original sketch I worked on for the Dynamite Fox piece. There are a lot of small differences here and there, the most notable being that both ears were upright in the original sketch. In the final version I decided to fold one of them over to give him a more resigned expression.

I almost always like my sketches better than the final version. When it comes time to finalize the lines, I can never seem to capture everything I liked about the sketch. I guess the sketchiness gives your mind a lot of leeway to mentally fill in small gaps or ignore small errors that are otherwise obvious in the final linework.

You can see the final version here: https://www.furaffinity.net/view/22940198/