I don't know what species and colour to make Johnna. I can't decide between the Angelic terracoon, Kerubi or Whyllop :/

i personally think the angelic terracoon is the cutest of those three.

I vote kerubi. One thing you might consider is color scheme cuz terracoon and kerubi are pretty similar other than that.

Terracoon: purple with red Kerubi: light purple with blue

Personally I like the kerubi's blue more, I think the red is a bit harsh and the blue is more gentle-natured, but I think it also depends what kinda personality you might be going for...

Not a huge fan of the wyllop personally.

Personally, I would go with the Terracoon. I think its expression is the cutest without seeming airhead-ish, and the wings are beautifully drawn.