Getting your body fat down will reveal that V your looking for. A good cardio routine will help you get there. A good rule of thumb is 30 minutes of cardio (more or less depending on the intensity).
Also try challenging your core (abs, hips, lower back, and butt) in different ways. Your core is interconnected so if any of those areas is weak it will make you stomach poof-out.
Mountain climbers (explosive mountain climbers too)
Planks (side planks, planks with leg lifts, hop out planks)
Jack knives and pikes (if you have stability ball)
Single floor leg lifts
Brigades (aka hip ups)
Locust poses (aka supermans)
Reverse snow angels
You can find these workouts here and at ab-workouts-guide.com I used some of them in my workouts (Core Blast, Sexy Booty) if you like them checkout Multi-Plank Challenge, Core Abs & Stretches, Mid-Section Drill, Autumn Abs, Drill Sergeant Mom, P90x: Ab Ripper X, Core & Glute Kicks or Extreme Plank Pyramid Challenge they're fun and challenging.
Good luck and God Bless!