I'm sure you did. I'm very sure that it's difficult to render characters with such vastly different body builds into the other, which is why it's generally not the best idea. It takes a LOT of artistic interpretation and editing. I listed the differences not be mean, but rather so that if you ever wanted to try again, you could do better and make it look more like Aniu. This may be your best effort now, but your best can get better if you work at it. That's the entire point of a constructive criticism--to help improvement. -nodnod-

As for the thing about being younger, I'm not sure whether that is very relevant. I presume she's an adult here and therefore would look preeeeeetty similar to what we see in the movies.

I apologize if I hurt your feelings, but I promise that was not my intention. My comment didn't contain a praise, but it didn't contain an insult, either; only a few pointers that I hope you can find helpful in the future.

Everything is written in Yukon's page.

Do you have a story written about them?

Well I tried my best, didn't I? Besides how do you, or anyone else know how Aniu looked like when she was younger? Please don't start criticizing me just because I've never rendered Jenna to Aniu before. I did my best, and that does not feel nice at all.

Hmmm...looks much more like Jenna than Aniu. Aniu has a longer, more shaped muzzle, a much slimmer facial profile, thicker legs/paws, a distinct eyes shape, larger "cheek fluff", smaller ears that are very close together, etc. Overall a much bigger, sturdier, and more wolflike build.