Madame Marissa wanted to try her luck at giantess fetish. She had tried almost every other fetish that was there. But she had never been a giantess. She learned how to use her powers to transform them into tiny cars and then crush them and destroy them completely or transform them back into their original state if that is what she wanted to do with them. It was great fun doing all that and she enjoyed it immensely.
Giantess Lady B was asked by her friend to teach her how to be a giantess. She asked her friend to record everything she was going to do and then do it herself. She showed her how to crush and transform most things. She used a house as an example. She then showed him how to crush it and destroy it or to preserve it depending on what her desired outcome was.