So, now to the practice: If you want to be a good girl, you actually have to masturbate as a girl:
Women are sensual beings and to get you in the mood you can run yourself a bubble bath if you like. Relax and take some time for yourself.
Another good idea are scented candles, which create an atmosphere with feminine, stimulating fragrances. Music can also help you to let go even better. Search for a suitable playlist on YouTube or Spotify with the name "Masturbation playlist"😈
Now lie down on your bed, roll around a little between the soft pillows and then lie on your back.