sorry for hogging your thread but a thought just arrived so i thought (hey that's two thoughts!) i would mention it.

your pose here is very similar to the begining pose to most balance beam routines by female Gymnasts, they tend to start like that (waiting for the music to start) and hold that pose (almost) for a while, so if you were to look up "balance beam" or "female gymnast" or similar, on google or something,  you may find a video of a  beam routine that might help you out, i would look out for the moment they lose balance, and the arm movements they employ to counter-act and prevent the fall, that'll show you what to do with your figures shoulders and arms.

end of thought. now i'm thinking of doughnuts and coffee.