Alright, let's get down to business. I personally appreciate that you're always playing around with your style; every time you make new art, I can expect something really unique from you, and that's awesome. This is no exception. However, the constant changing of your style has a disadvantage or two, namely the way that sometimes these changes can create something ever-so-slightly disturbing. This is no exception.
It's unsurprising you hate drawing humans, as you've made the classic mistake related to that which stands erect upon two legs: she has no hands, yet infinitely stretchy arms. This can often be covered up due to clever placement of limbs, but this is not clever placement. Hands clearly belong under Rarity's belly and it would have contributed to the picture greatly to place a pair there, but unfortunately you didn't. This opens up a couple of other issues, mostly related to the length of the arms.
Sweetie's left arm lacks an elbow, and considering she's trying to give Rarity some snuggles, this is quite conspicuous. In addition, it appears weirdly long due to the fact that, as I said earlier, there's no hand to cap it off. The right arm, on the other hand, appears to have been amputated quite recently. The distance between it and Rarity is very short and it doesn't really appear anywhere else, so I'm left to think either it's extremely short or Sweetie is clawing Rarity's eye out with it off-camera.
Continuing the theme of anatomical issues, I'd like to highlight her legs. Now, I want you to do something for me, alright? Grab a pillow off of your bed, or maybe a couch cushion, and as you hold it I want you to turn each of your feet inwards, so they face each other. Chances are, you can't, or if you can't it's probably quite uncomfortable. If you can, I suggest you quit drawing and try to learn gymnastics. The pose isn't very natural at all. Though it may be a bit more permissible on a fully-developed woman with very wide hips, an adorable stuffed animal-toting loli should be utterly incapable of it.
Now, I can permit the chibi face, because it's clearly stylized and I can appreciate it. However, I would like to make a few comments on the rarity doll she's carrying. Now, it may not be intended to look like an inanimate object, but it does appear like one. Why is that? The eyes. It stares the viewer dead in the eye, into their very soul, straight-on, with the intensity of entire galaxies being focused with a magnifying glass. Truly, no terrifying gaze like that could be attributed to anything but a adorable little doll! As a lesser concern, her hair and tail are rather distorted. The tail should be longer, and the mane is far too wide, though that may just be a way to compensate for Rarity's head being so large.
However, you did do quite a few things right and I'd like to praise you for it. You captured the chibi style on both of them very, very well, despite Rarity's horrific gaze, and Sweetie Belle is proportioned quite well to fit with it. Furthermore, the swoosh of her cape is done perfectly; it's smooth, flowing, and demonstrates her energy perfectly. I also rather appreciate some of the texture work done on her jeans and hair, which look very nice. Everything, on the whole, just has an ungodly amount of cuteness.
Overall? I'd say it's a 4/10. You've captured a mood perfectly yet again, but the numerous anatomical issues and Rarity's absolutely terrifying stare really detract from the picture as a whole. I can see why you're not fond of drawing humans!
I'd really wish you'd be doing more critiques about me and the stuff I do, these are really good and I'm so sorry I didn't answer them properly I don't know why i didn't see this one before.
Actually this wasn't one of my best works...it was just a quick thing, yes I tried to make them look chibi and kawaii and that but I wasn't satisfied anyway, just look at the face, those giant eyes, that tiny nose(? and that mouth it's just awful.
And of course the anatomy, that's why i don't like drawing humans, and I have something in my head that tells me not to see references or pics because that'd be like cheating and I'm by myself, I fail alone and well that irritates me, but I still do it
hopefully you'll be back, I think I'm improving but my opinion is never the right one, oh well I thank you a lot for doing these and I will miss them, nobody takes the time to talk about everything, your opinion is really useful and it had helped me a lot.