First and foremost I thought you looked great and your conditioning was as good as anyone could hope for. As far as what I felt was a glaring weakness was your posing and presentation. With an emphasis on your first pose (The Most Muscular) I don't thing this is the most muscular most suited to your phyique. All of your non-mandatories seemed like poor choices for your physique. As far as your mandatories they seem like you are hinding something, they lack confidence, almost like you are saying "here is my double bicep I hope you like it"
Other than that you did you homework and you showed up in shape and I commend you for that. That takes hard, work and dedication. Remember though that bodybuilding is something that the majority of the prepartion (dieting, lifting, and cardio) are not done on stage. Unlike say Football where a team scrimmages all weak and then plays a real game on Sunday Bodybuilding is not like that. With all the dieting and training the presentation can be put on the backburner. Learn from this and work hard on the presentation for next year.