How to get full body pics with model face? and other

[alicedelish]

I tried many times and I can't beat one problem, when I prompt a portrait SD gives me my face, and works nice, most of the time. But if I prompt full body\standing\sitting on a chair etc - it either ignores the prompt or gives a body shot with a completely ruined or some other person's face. I tried a lot and used just face close-ups, then I started adding face+torso and full body pic. At the moment I have 6 face close ups, 3 face and breasts, 2 sitting on a chair, 1 sitting on the floor and 4 full body pic against a white wall.
Here is an example:

As you see it resembles the form of a reference picture, but face ughhh
Here on the pictures the prompt is the same for all, but top 3 pics are from some model found online, other from my own

It's seems it just can't follow the prompt and doesn't know what to do. There are a lot of nice clothes and lingerie on pictures the reference model produces, what should I do for my picture also come that nice?

Also, what are "classifier" pictures for if said simply? I am learning how to use them properly, should they be generated exactly from the model you are training your face to or can be any pictures that depict the captions of the dataset? Because autogenerated "classifier" images sometimes have defects and I wonder how these defects affect the final quality of learning.

Also, I like some models people post online, and I would like myself to be generated in the style of these models. I tried merging models - but my face gets lost. I tried teaching the model like I teach standard SDv1.5 and I get mixed results, some times SD ignores my name token, and sometimes it works, but the face is not really recognizable, or - how to do this the right way? Also is it possible to teach anime models to photos of my face or do I have to process the photos to look like anime first and only then use them to teach the model?

There are a lot of questions here and I have more, but trust me I spent a lot of time practicing and reading all the controversial info on the internet, got 6000 samples in output folder, created dozens of ckpts all in about a week of time.