You've already got pretty good definition in the lats and lower back. I would honestly say this is your bulker so just eat eat eat.. Thicken up them arms and get that lat spread a little wider. But nice work bro.

Jhendo pointed me to search for proportion because I am looking to compete this year. Check out this site, it has a calculator to help you determine your proportions which will give you good input on what you need to work on to get your size even. I will use this as goals in my workouts to try to achieve "optimum" proportions and adjust from there.
http://www.bodybuilding.com/fun/drobson207.htm

lower back and triceps could use little more work. are you bulking or cutting ?