[nsfw, gifs] Etna reverse cowgirl + tanlines, more YCH results

I wanted to add some tanlines to the Etna animation, so I did. They were pretty tricky to get down but I was able to do some witchcraft. And

I wanted to add some tanlines to the Etna animation, so I did. They were pretty tricky to get down but I was able to do some witchcraft.

And, a couple more YCHs to round out the queue. (Again, just a few of them, not all of them.)