I get asked ALL the time how to get sculpted arms. Well, (along with a healthy diet) here is a workout I did the other day. Nothing fancy. Just very simple moves. But very effective!
Preacher curls 4x12 (dumb bells, 20-25 lb)
Seated incline dumb bell curls 5x10 (20-25 lbs)
Drop set hammer curls 4x8,10,12 (Start with heavy weight for 8 reps, then immediately drop to a slightly lighter weight for 10 reps, then immediately drop to your lightest weight for 12 reps) That's one set...perform 4 sets
Cable curls 5x12
Rope press down, dips (unassisted), skull crushers 5x12 (Perform these with no rest in between exercises)