The right way should be honest verbal posing, paired with the photographer modeling the pose so that you can mirror, and explaining why it looks good.

Honest verbal posing - means telling you which way looks good, which angle does not.

Modeling the pose - the photographer should be able to do what he/she wants you to do, easier to copy what you can already see.

Explaining - it really helps to cancel out what pose do not work, we all have angles that do not look good. The photographer should tell you that. You as a subject should not be offended.

You as the subject should, listen and go with the flow. Adjust your pose one aspect at a time, don’t let go of the pose until the photographer tells you to. Breathe, relax your shoulders, feel confident.

This is assuming the photographer knows what he/she is doing.

I find that what pays off more is shooting closer to home, making solid connections with people who are likely to call you back for such events. Later once you’ve built your network you can focus your attention to shooting MLS, hopefully as a paid work.