I get a lot of front delt work in from overhead pressing and benching so don't do anything extra for them.
I do this once a week, after benching.
Heavy lateral partials: 4x35
Reverse pec deck: 4x35 (max ROM)
Rear delt flies: 60 reps, 30x50%, 10x25% (2 second hold)
That's lateral raises with a dumbbell too heavy to lift more than 45 degrees from the arms. Full ROM lateral raises only seem to hit my traps so I go too heavy, keep them strict and do a lot of reps.
The rear delt flies again is a heavy weight I can only do partials on, say 18kg then after 60 reps I switch straight to the 9kg bells and knock out another 30 then the 4kg bells and another 10 with a full ROM and two second hold at the top
I also do a lot of upper back work once a week recently too which trains the rear delts hard. This looks like the following:
Meadows rows: 3x8 (one armed t bar row, you stand so that the end of the barbell is by the side of your chest)
Dumbbell deadstop rows: 3x8
Stretchers: 2x12 (
Stretchers - YouTube)
Heavy partial pulldowns: 2x8
Supported rows: 3x10
Hex Shrugs: 3x12 (pause at top 3s)
Hyperextensions: 3xF dropping weight each set