@Bk13 On your creature, the one thing I noticed is that the muzzle is a bitt to long. Other than that, it looks great!
@Applejack This may sound quite jumbled and there will probably be an abundance of spelling errors, but I'm on a time limit so please bear with me:
Let's start with the legs. I can see where you're going with them, but you made a few mistakes. The thigh does curce inwards, but not so steeply. The knee bulges out on the insides, yet indents on the outsides. The outdent is higher up on the calves, as less steep on the inner side of the leg.
The elbow, like the knee, bulges. Unlike the knee, however, it bulbes slightly as both sides when looked at head on. The arms (hands included) end 1/3 of the way down the thigh, while your's ends roughly at 2/3.
For the breasts, try not making them outdent so sharply, if at all. Breats only outdent if they are (for lack of a better word) quite prominent, which is naturally not always the case. For smallers breasts, try indicating it head on roughly where the would, well, end.
And, on another note, if your characters are standing (which I am currently unsure of, for lack of a ground marker/more completed backround) make sure the line up at the feet when standing side by side, rather than the head. If they aren't standing side by side try to somehow make the farther person's features smaller in general. And, if they are flying (considering their wings, which I would criticize if I was skilled in the subject), keep this standing paragraph in mind for future references.
On a last note, the shoulders should be sloped, not straight.
~commonerKing C: