I started out wanting to do a full body tf sketch, but I was having a hard time getting an expression I liked, so I decided to just try sketching some expressions. Finally, got this one that I liked sketched in rough and decided to just convert half the face into a frog, because why not? I like frogs. If you're a fan of my work, you know this.
This one actually has several alternate versions, as I tried different things, but I gravitated towards this one, and so did a couple of friends that I asked, so this is the one that I finished up the full details on. I've got the other versions partially finished and I'll put those in my scraps so people can see what I was doing with this.

Alt 1: https://www.furaffinity.net/view/34643932/
Alt 2: https://www.furaffinity.net/view/34643955/