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the eyes look a bit to happy or excited when i think the girl is suppost to be sad or lonely. but i really like it!!

I can only really mention what others have. The arms are a little long, indeed. Shorten her left arm more then the other, with the elbow-to-hand ratio cut. It's length doesn't match her right arm at all. And that right arm's thumb? move it a little further to the left, so it's not like any of the other fingers.
With both arms, raise the elbows up a little, so that the hands cross above the shoes.
Said shoes are too narrow, and it looks like her ankles must hurt in that position. Try drawing a level plane, and then rising the shoes up a little more to the viewer's perspective. We should be seeing more of the tips and bottom, and less of the tops of the shoes.
The ends of her shorts in the background seem a little dark; give some folds to the fabric, so we can easily recognize it as such. It will add some major points to this piece.

I like her shoulders and how her chest meets, as well as how you did head shape and hair. Don't take anything I said as harsh. XD I'm just poking some ideas at you.
I suggest looking at pictures of how people draw shoes and feet, as that can help you a lot. They were my major qualm with this piece. Still, keep at it. You're not doing bad.

Just for the record, the weather today is slightly sarcastic with a good chance of...

I updated it! Check it out!

... A. Indifference or B. Disinterest in what the critics say. ~Panic At The Disco

dont mind me if i'm a bit harsh i'm just pointing out points of interest to me.

the eyes, pretty good might i add since i suck at drawing them both visible, the irish, should hve a slightly larger pupil and maybe even some shading around it to give it color, no ones irisis are as white as the rest of the eye ball.

the mouth is slightly crooked, i cant tell if shes frowning or smirking, if smirking make the lip line straight then pull a the end of the lip up just a bit. if shes frowning the mouth line should be in a slight arc. her nose a a bit tilted as well

a quick comment on the hair, it's pretty good, just you should add a bit more fluff and a little bit more curve, it would make it seem more real and nice.

the collar bones as you have drawn them are not that crooked, they're more soft and curved also the neckline of the shirt it too high to really see much of the collar bone, so there no point in drawing it.

Now when your arms are holding your legs and your hands are that far down, they're really not that relaxed, it kinda looks like the bones in your one lower arm is melting and the upper arm is turning to rubber and scratching (sorry) but they need to be a bit shorter, straighter and as mentioned before fatter.

your feet like in the first pic, the angle is too much but in the second the angle is too little, if you find a medium in between them not how they point out but seeing the top angle is what i mean, also your legs look like fat sticks, add curve to them and they;; look a it better your butt (haha butt lol so ironic sorry off topic soo where were we..)is a bit square, or triangular or whaterver.

not to be mean, hope it helps though, I've been drawing for like four years and my anatomy still isn't the best.