My delts respond really well to lateral raises, you could try that. Hitting them twice a week on push days after your compounds. I like to do 4-5 sets of 12-15 reps with single arm cable laterals. I would do them heavier but it's a risky exercise for my dodgy shoulders so i perform the exercise really cautiously and controlled.
As for biceps.. They're a bitch for me too, what's worked best so far is remembering to progressively overload (more weight/reps/sets) and doing supersets (usually rope hammer curls superset with preacher machine).
I'm sure there's plenty more people with better knowledge about growing individual muscles, hopefully they can chime in.