seriously though you have a good base to start with from what the pic shows , good luck in your show.
From the last couple ive seen its a total crap shoot as to what the judges are looking for , one show the guy that won over all had a similer build to your , nice lines not to hard
the very next show the over all mens phisique winner was fuckin peeled back honeslty as lean as the light and middleweight body builders , very lean and dry , nothihng like what you would see at a beach !!
Head to body building and just focus on getting a big and lean as possible , seems much easier idea wise anyway