SKateboarding help please?

ok ive been skateing for a year and all i can do is a ollie and i can do it realy high but ive been trying to do kick flips and heelflips for the longest time my kickflips its confusing cause i hate the footplacement and when i ollie i dont get how to move and glide your footback then with the heelflips i get the flip and i only land one foot only i dont get it can you help me thanks sorry i dont have a video