Well, I couldn't really say that terra cota are found in nature, so I don't know how natural your setup is going to look.
That said, scaping is all about what you like. After all, you are the one who has to look at it everyday. If it was, I would probably offset a few things so they are not all facing so perfectly forward.
I think all three pots laying down in the same direction looks unnatural. Maybe try burying one more upright? Just try to make them look random, not intentionally placed.