Have this same experience learning 3s. For me I learned that I ride backseat, may feel dope, but does not feel great when you land backseat and get the shinbang. The second thing for me was that I wasn't really popping, this plays a big factor on how you're going to land, especially when it comes to spinning.
May be a little silly but his videos are good:
https://www.youtube.com/channel/UC1Ho5YvHCtyReazatbhBowA/featured.