it is a pleasure to help when seeing how much you improve… she is great already… two things might push her a little more : first, look how far back her mouth corners are,in side view, they are not so far back in your sculpt… and, look at her eyes, at the lower lid. can you see how it fits nicely around her eyeball ? even though it covers the eyeball, we have the feeling we can see the roundness of the eyeball under the flesh of the eylid… try to capture this in your sculpt, by pushing the groove you made to indicate the lower lid, farther back, turn on transparency and now try to move this part of the mesh that it sits snuggly around the sphere you inserted as eyeball to shape a lowerlid like she has … i believe when you put these two things, you get very good likeness. you can always tweak to get closer, but now you did already great… 
Thanks!!! I`m moving but the sculpt is still far from reality(( i would like to put photo reference directly under my sculpt and change proportions. So how can i do this? I need reference being unmovable but it still should stay in subtools for the opportunity to see it through my sculpt. please help me! excuse me for very bad eng))
Take a look at “Image Plane” from the “Texture” palette! 
There you can load reference images and store them together with several views of your model and you can adjust the model opacity.
Some informations are also here: http://www.pixologic.com/docs/index.php/Image_Plane
Edit:
Or you can use “Spotlight” with your reference images too.
Thank you Phönix! Image Plane is great! So here some update and some photo references. I like her face expression on the first photo so i tried to create the same. Don`t look on ears by the way.
well heres what i think the head needs
1 under the eye it sags to much
2 the tip of the nose needs to come down a litel
3 the mouth needs needs to have less width
but keep it up its looking good
You’ll want to soften the creases of the lips especially the bottom one. What gives it a “creased” look in the photos is the colouring change from skin tone to pink.
Thanks for the help! here is some update and i have a question: if i want to animate this sculpt what form of the lips should i make? i guess mouth should be opened little bit.
Next update, still unsatisfied with the sculpt, there are many sharp lines on this photoreference and they look very clearly, but i can`t recreate them:( I need your help again 
Superb! 5 stars.
Next update, can you tell me some things about likeness?? is it enough or its very bad? im working on this sculpt quite long time so my eyes are sick and i cant see the likeness clearly enough:) Maybe its time for detailing? Please help
Here is some 5 minutes texturing, im not on the texturing stage, its just for some distraction 
I love watching your progress, this is coming out so well and even if this last was just a distraction its remarkable.
Thank you MealeaYing!!! Making some progress. There is might be a question why Im doing a sculpt of a young girl, dont get me wrong please, i`m 16 now.
Need help! There are few problems with topology. Will it be possible to fix problem areas on the retopology stage?
Whenever more than four edges converge to a point it creates the problem you are currently having.
Its manageable if five edges converge but it gets messier the more you edges you have, and If you use the smooth brush it only makes the problem worse.
What you should do is use the “smooth valance” brush (it was designed specifically for this problem).
Break with first sculpt, there is another one…
keep sculpting Moretz:) 
hi, i liked your sculpt you called break. even though it was “only” a sketch and rough, it has lots of power and emotion…the pose alone tells a story, , ,
i enjoy to see you are still working on your portrait. i am not sure if you wish critique, so, in case not, please ignore my following…
i think you have captured the essential of the eye area, as well as the mouth. but the nose is lacking. it looks good from 3/4 view
but from front it looks too wide on the bridge.the foto does not cast shadows strongly here, so it is diifuclt to see, but my guess is the sculpt has too wide a nose bridge…
and, may be, this impression only comes from that your sculpt has the indent nose-lip (sorry i do notknow the english name for it) very prominent.
yes, she has it deep but the edges are soft. try soften these edges on your sculpt considerably, i would think it gives immediately much more likeness,
as it would tie togehter your good work on the eyes with the good work on the general shape of the mouth…
as said, if you do not wish critique, please ignore my saying completely,but your preservance is admired by me, thus my humble try to help…keep going strong