To give your backside that nice, round shape, you need to choose the best glute exercises, that target and activate the muscles, and use enough weight to build muscle tissue. http://www.spotebi.com/fitness-tips/the-best-glute-exercises-lift-round-firm/
How to Burn More Calories Walking. - Walking: Countless numbers of doctors recommend it. Scores of studies extol its benefits. Walking is an incredibly effective exercise. It’s also convenient & easily integrated into daily life. Here’s how to up the ante
You want lean, strong legs (and a tight, lifted butt!)—these four moves work multiple muscles at once while improving balance and strength. You'll feel the burn not only in the working leg but in the supporting leg, too. Do this sequence in order (first on right side, then on left), plus 30 to 60 minutes of cardio, six times a week.
Full-Body Dumbbell Workout with Compound Exercises (Pumps & Iron)