Cardiovascular: Need to get the cardio in on a consistent basis. Three-Four times a week at 20 minute sessions of intense (80% Max Heart Rate) cardio will get that extra layer of fat off.
Clean Eating: Your meals should be divided into 50% Protein, 30% carbs, 20% fat. EAT ACTUAL FOOD! Try not to eat too much processed foods or snacks. Eat 6 small meals a day and 8 glasses of water.
Abdominal Exercises: Working the entire core (not just crunches) has way more effect on the stomach area. Planks, Side Planks, abdominal twist, are just some of hundreds of core exercises to get you the six pack you always wanted!