For a lifted and toned butt, you want to focus on the area where the gluteus maximus connects to the hamstring with standing exercises that implement hip hinges, or floor exercises that work the hamstrings.
One of these activities is that Stability Ball Hip Thrust. How to: Start with arms behind head (elbows wide), upper back pressed into stability ball (or elevated surface, like a couch), legs bent, feet flat on floor, and hips hovering above the floor. Lean back into stability ball and lift hips toward ceiling until thighs are parallel to mat. Return to start. That's one rep.
You must need a yoga ball. This product is suitable for you.