Thanks bunches for the feedback. Having an interested, insightful audience is a lot of help when my motivation is running dry. And now to acknowledge individual replies...
avwolf: All right, I'll do it :P And I'll blame Natani's unconventional femininity on stylistic differences. In general, Tom's style seems much more angular (with Kathrin being the obvious exception ~_~), which I'm guessing stems from its manga roots. My earliest influences were real-life observations and Disney, and I didn't become interested in anime and manga until much later. I'm not trying to emulate Tom's style; I just want the characters to be recognizable ^-^
casterclass: You're right, there's something about the angle of her muzzle and the position of her eyes that doesn't line up. A three-quarter view from behind is difficult, but I'll just have to work with it some more. Thanks (:
Dogman: Yes, it is an extension of the spine, but my Keith's tail looks more like an extension of his [censored].
...I'll fix that up right away :oops:
Jones: Thank you ;) Your work is nice, too...I especially like your most recent submission.
Sable Dove: Yup. You're right, she is a bit bigger. And while your long-lost sister theory is amusing, I think poor Natani has enough competition for now ^_^'
...now to get to fixing. I'll post a revised sketch in a bit, but in the meantime, here's something else for you to look at.
This is an old drawing of my original anthro characters Kuro and Ana (respectively).
Uggh...I hate looking at old stuff. The mistakes are glaring >_<