Side Kicks are a great way to get beautifully toned legs and also a great way to firm up your fanny! The main thing to pay attention to is keeping your hips stacked, one on top of the other. Don’t let the hips tip forward or fall back. This helps to target the gluteus medius and also gives you a stronger core because you are having to use your abs to help stabilize your torso and hips.
I recommend doing 8-10 reps of each exercise and do them rather quickly in a row. Don’t stop for breaks!