don't do shoulders by themselves
do them as a part of your chest day
do chest first so as to pre exhaust your shoulder muscles
from there do this
3 sets of front raises (12,10,8) after the last set do two drop sets (1st drop do 10, 2nd drop do 20)
3 sets of side raises (12,10,8) after the last set do two drop sets (1st drop do 10, 2nd drop do 20)
3 sets of one armed side raises(12,10,8) after the last set do two drop sets (1st drop do 10, 2nd drop do 20)
3 sets of rear pec dec (12,10,8) after the last set do two drop sets (1st drop do 10, 2nd drop do 20)
3 sets of upright rows(12,10,8) after the last set do two drop sets (1st drop do 10, 2nd drop do 20)