How do you land 360 shuvits?

Hi, I can ollie, shuvit, pop shuvit, kickflip, boneless, boneless 180, boneless finger flip, board slide, casper, but I'm having a really hard time getting the full rotation for a 360 SHUVIT not 360 POP SHUVIT. I can only 270 shuvits and then just pivot which is rare for me me to land like that. I land them best in my garage because the cement is very smooth and its very hard to land on the sidewalk because it's not smooth at all. I also have problems when board will just fly out in front of me or flip. I also get kind of freaked out when try to land 360 shuvits. Any suggestions to fix problems and how to get the full rotation of a 360 shuvit(NOT 360 POP SHUVIT). Thanks!