These pictures of mannequins set in different poses can be helpful as underlays when working on storyboards.

Hand positions
clenched, fists, gripping, holding, open, pointing, praying, surprised, thinking

Body positions
attention getting, surprised, confused, dancing, creeping, curious, hands on body, slapping, feeling, lifting, looking, opening, nervous, reaching, shutting, sitting, standing, prancing

Hand Positions

clenched
fists
gripping
holding
open
pointing
praying
surprised
thinking

Body positions

attention getting
surprised
confused
dancing
creeping
curious
hands on body
slapping
feeling
lifting
looking
opening
nervous
reaching
shutting
sitting
standing
prancing