If that's the case, hit the compounds primarily, hit accessory stuff for upper body aesthetics and fun, and make sure you get some cardio in.
Also, focus on just getting it done in the gym - try and minimise rest times and just get a good sweat on. I see lots of people spending more time sitting around than actually lifting. Dumbell complexes can be good for this - lots of different bits get hit, works up a good sweat and you'll be knackered.
I always like the Javorek complexes (not with 25kg dumbells, mind).
And curls, do some bloody curls. Ignore the circlejerk (looking at you reddit) about how they're pointless.