I started skateboarding i can do a pretty good stationary ollie but i cant do one moving i just fall?

i think all you need to do is practice on gr over and over again. don't go too fast, or you will fall. and a pop shove-it is probably a good trick right after ollieing. on a pop shove it, all you do is an ollie while twisting with your hips and legs to move the board 180 degrees.