ANY SKATERS.?PLEASE Answer my question 10 points to the first person to give me a good answer.!!?

okay well i`ve been skating for a couple years i can kick flip, Ollie 180, fackie 180, variel kick flip, pop shuv it, fackie shuv it, Nollie shuv it, Nollie, etc. but i was playing S K A T E with my friend and i didn`t realize i can heel flip so its been a week now and i`ve been practicing it for about 2 weeks straight now.. i can get a hight of about 1 foot and i get ALMOST a full rotation .. i either land PREMO or with the grip tape side faced down i keep landing like this and now i have pressure cracks ALL over my board and my bearing keep coming out.. if i DO get a full rotation the board land behind me . anyone that knows how to land a heel flip please give me some tips that have helped you or send me links to videos that may have helped you