Her outfit is nice and simple, and her hair is well drawn. Her proportions are generally a bit awkward (her limbs seem thin and undefined, her hands slightly large), unless this is done as a stylistic choice. Something that caught my eye -- it's quite unusual to see a red fox without a white-tipped tail.
I've never gotten that much practice in arms, but I did want them to be thin. I agree, the hands are a bit big, but I think it wasn't that noticeable so I didn't fix them especially that I had already inked it before I realized that lol yeah the backwards-facing one is really just me flipping the frontward facing one horizontally and redrawing them. that's why it looks like her back in curving in on the first one, but I was having too much of a hard time digitally redrawing it (I usually traditionally draw things before doing them digitally.) so at the back, her boobs are in a totally different spot. My sister complained that her one boob looks higher than the other but I was aiming for that- She is leaning on one leg more than the other (one is more forwards, too) so I would give the illusion of movement and not have her look so stiff and still. One shoulder, one arm, and one boob is slightly higher than the other so it shows her spine is curving.
I love the expressions and the shoes and tail btw =3 I am not so good at drawing expressions or 3/4 view. Ok since you said the one side is a bit more forward, with how far you have her boob forward the shoulder isnt low enough and I think if you had turned the hips a bit more it would look more natural, otherwise your arms are a bit too long and thin in comparison to the hands and the upper torso is also a bit too long in comparison to her legs, but overall cute picture =3 I love how you draw partly open mouths like that, it looks really good.
No I wasnt exactly talking about the shadow, more like the line you draw right in the middle of the boobs like which you have in the other image, I explain it in the other post on your redline image, hopefully you understand what I mean ^^"
But yeah it works quite well defintely looks like shes turning to talk to someone just behind her, looks natural, not just posed, I like it. =]