This is a lot of volume too many sets,why dont you try pre-exhausion,ie super set a isolation exercise with a compound exercise.here is a example.

1. lateral raises to sides.super set with front press.3x10

2.bent over lateral raises,super set with bent over d/bell row.3x10

Or if you do not like super sets try drop sets ie,shoulder press 10 reps
drop weight 8 reps
drop weight 6 reps
drop weight 4 reps.

These make your delts burn,also try these on other exercises.