I need a real or good skateboarder to help with this one. om pretty good bu ti need help with something HELP!!

thnx guys for taking time out to help. k i can ollie about a foot high i can railstand adn can backside shuvit, caveman, and an indy grab but it seems as if though im having troubles wiht my ollies. the thing is when i ollie stationary i do it perfectly one foot or more sometimes even two or three feet but when im moving i can either do it very low or after i ollie i stop moving. my highest ollie while moving would be two inches!!thats how muhc i need help. could some caring person help me out. its likei need someone to explain with full detail and tell me the things i shouldnt do. PLEASE GUYS IM RELYING ON YOU!!!!!!!!!!thnx