Hello, Michal
The first exercise is accepted.
For the second: In this lesson, it is very important to learn how to correctly read the light-shadow zones. Shadow zones that we see in the photo without internal detailing (general shadow zone of the eyelashes, parts of the iris, pupil). We also see the shadows on the eyeball in the photo without detailing. Also transfer them to your drawing, despite the fact that on the sketch we mark all the components of the forms. The most illuminated areas that are not printed on the photo, we also leave pauses in the skrtch. This is important, because when working with a small size on the template, we simply will not have place for detail, and the full drawing of the entire form will make the image rough and naive.
The third exercise will have to be completed after I have accepted the second exercise from you. Because you make the same mistakes in the third exercise as in the second exercise.