Skateboarding problems, please help?

so, i can do a good ollie and a moving ollie and a couple of manual tricks but i tried to do a pop shove it and a kickflip but i messed up bad. for the pop shove it, i scooped my back foot and it spun 180 degrees but it landed about 5 feet in front of me. for the kick flip i tried to slide my foot off to the side and either is only spun halfway or it spun all the way and my front foot pushed the board in front of me about 5 feet. i really need help to learn these tricks soon. and if u guys can teach me how to 180 ollie, that would be great. thanks a lot!