Overflipping all trick

So recently ive been trying some new tricks such as cork 3,5 and 7. I dont know how to explain it in order but ill keep it short: everytime I try corks, it end up over flipping, when I do cork 3, I end up completely upside down, I figured it was easier to do a 5 instead of a 3 and end up doing underflip, yersterday I tried cork 7 for the first try and after watching the video way too many time I figured it end up in a underflip 7. How can I correct this problem of over flipping all my inverted trick?