Originally Posted by BendtheBar
My rear lat spread is the worst. I can nail it but I strain myself when holding it too long.
Being your first show practice posing for a 1/2 to 1 hour a day if you can. With holding a pose for 30-60 seconds. This will help out so many things and will also help you look like you have been on stage before. It will also get your muscle groups used to the strain of the force held flex.