Hello there! You asked for a critique on this anatomy practice, so I am here to suggest some improvements for ya! The other critiques didn't exactly seem helpful in the helping-way. Lovely artwork you have, hopefully I can give some helpful tips to make it better.

As for anatomy, 'tis alright. The chest area could be improved a bit. Those lines: the neck one, the horizontals, I think it might be better without them. And the cleavage might be improved if it didn't extend so far up, etc. Here is a nice on for those chest lines, making them look a bit nicer and less randomly placed. [link] Here are some tutorials on how to draw breasts to look a bit more naturally, too, and less mashed up together as they seem to be. Breast improvement is useful to anyone, as those can be tough in general! [link] [link] Tutorials are lovely things, I highly suggest looking at both them and at real examples. Look at how others do it, for example your favorite manga artist, and finding which parts you like, combining them into your own style, is a wonderful way to improve. But never be complacent, always strive to improve! Keep going! Your art will be awesome in no time!

Her outfit is nice. I can't really say much! Maybe just some shading would make it even better? Keep light sources in mind. Color in some shadows?

Here's a lovely tutorial for manga-style hair. [link] Right now the random spikes with such thick black outlines are a bit distracting to me, taking away from her face, not looking quite like real hair at all. Following the tutorial by making quick light strokes instead of big thick spikes can help make for beautiful hair in the style. Trying to avoid the black but rather using a darker version of the base color makes it look lovely. It also really helps to add shading colors everywhere. Highlights and undertones make for beautiful flowing hair. Check out that tutorial and you will be able to see the wonderful difference it can make right away. ^^ It truly is a very good tutorial, I very much agree with the points it's trying to make!

The rest of the anatomy is pretty good. Just keep up with looking at some real life pose references. Looking at yourself in a mirror, as a random tip, is really helpful. You look nuts doing it, but it helps, I swear! You can test that way if your character's pose is realistic. Try it out sometime for a future drawing. See if it feels good to pose that way or if it's awkward or painful. Helps a lot for hands, too, which are tricky.

Lastly is the face. Pretty good, but a bit minimalistic. No nose, hardly a mouth... The chin shape is a little shaky. Kinda bigger on the one side... Blobish. Her eyes look a little blank and staring into space, is that intentional, as a part of her character? If so, sure! But once you feel comfortable venturing into a more real manga face, here are some tutorials. Tutorials, man, can never get enough! Here's one for a simple manga-style head space and facial proportions. [link] Here is another one for face shape, a bit more advanced, but useful if you want to try a side-view shot or from a different angle. [link] Here's one for some pretty eyes. [link]

Alrighty, that's all for now! (Too lazy to write more!) If you have any questions, feel free to ask or to look up some more tutorials or references on your own. There are bunches! With a lot of drawing practice you'll be able to move onto more advanced manga and eventually onto more realistic figures, too! ^^ Good luck! You'll be making awesome art in no time! Thanks very much for letting me to critique your art. Have fun!

All I would say is the same thing Rovanna said, that and
you can't see the ankle definition... idk how to explain it but her calves look muffintop to her boots, and it needs to be more evened out there.
if that's the belt on her waist it looks a bit unnatural idk y maybe its just me
her shoulders are a bit stiff, but if she's hiding her hands behind her back maybe she's purposefully stiff
but usually it's more relaxed and all
other than that I love her so much she's adorable and appealing

now that my crit is soo short imma ksdgbaiofdgvpfehkgbvproitfhmbirgt;hbslfhmgblatkjehnrbsaytjbtwjusrhetgjn