If you want meat on your shoulders, you nedd to stick with the basics.

Military press (always to the front)
Lateral raises
Front raises
Reverse bent-over flyes
Upright rows

If you haven't done these before, you may not be able to move much weight. Thats ok. Don't risk a shoulder injury by trying to do more than you can. Always do a couple of warm-up sets first. You don't want a bum sholder. Start with the compound movements and finish with the isolations. If you are short on time, I sometimes will superset the 3 raises for three sets. Its a great way to fry those delts.