Nathan - seriously - look at your favorite pros or better, the top national competitors & see how they pose to get pointers on the best way to present yourself & ways to tighten up your presentation -- I was at the NPC Jr Nationals in Chicago this summer & I thought it was some of the best competition I'd ever seen across the board - this might be a good place to just see how these guys do it, try the poses, take pix & see what looks best on you -- I'd do everthing I could to get capped delts and a straight line across your shoulders on your lat spread - lat spread is an art form so I understand it is a tough one to really get to look right but when it does, it rocks! I'd also make sure to have your chest up & out, back straight on all your side shots - I think its real easy to hunch over some and focus on doing the bicep thing, but that striaght back, chest up & out really presents nicely.
Here's a link to the Jr Nats pix:
http://www.graphicmuscle.com/index.cfm?go2=comparisons&ContestYearID=688&DivisionName=Men