As Lee said really nail your madatories! Watch some contest DVDs and you'll see some really good...and really p1ss poor... comparison shots.
The sad fact is that most judges dont even judge the posing round, they view it as an extra muscularity round and if you can hit the compulsories well you can just hit those with a bit of histrionics (artsy-fartsy sh1t) in between each pose.
For your first show, anyway. The more shows you do, the more confident you'll get and the more expression you can put into it.
Don't expect to pose like Shawn Ray at your first contest.
As long as when you're posing you don't look like your having a seizure then you won't look outta place.
