It is recommended to post a picture of your upperbody and your legs seperately. I don't think you need to pose per-se, a standing-relaxed pose is fine.
If you are looking for BB-type poses, check out the images section on google:
Do you know martial arts? (since you are living in Japan, I had to ask) If you are, why not have someone snap a few pictures of you in a fighting stance? Or doing some cool spinning back kick.