By Part 4, the subject has usually filmed with IFM before. The initial self-consciousness is gone. Viewers witness a woman who is no longer "trying" to be sexy. She simply is . The movements become more intuitive, the eye contact with the camera (when it happens) is less pleading and more confident.
And that is more than enough.
As they talked, Maya found herself feeling a sense of excitement and curiosity. She asked Alex to share more about her experiences with IFeelmyself.com, and Alex happily obliged. I Feel Myself part 4 IFM IFeelmyself.com