How do you kickflip and land a skateboard?

I know how to ollie pretty well, and i can also maneuver a kickflip, but i have a hard time staying in the air above the board. I have a tendency to jump my body to the side. in other words it feels like i cant commit. does this just take time and practice... which im sure it does...? i guess im wondering what are some ways to practice for my body to stay above the board as it is flipping. thanks for all the help, hope i dont sound like too much of a loser, lol, i just am tired of not staying airborne, lol.