Biggerflip or Biggerspin Flip is an elevation from Bigflip and therefore much more complicated. Not that hard to flick, but adding an extra Shove-it can mess up your landing a lot. To clarify what we are doing we need to say that this is a Bigflip with an extra Shove-it so basically board will do a 540 flip and your body will do a backside 180.
It sounds terrible but it won’t be that hard to learn if you get the Bigflip clean first. Once you have the feeling of how hard to flick you should be able to adjust it and land centered. Your feet same position as 360 Flip or Bigflip but regarding you wanna flick harder to send the board into 540 flip you should move your front foot a bit closer to the center of the board. Flick pretty hard and at the same time start turning your shoulders into backside rotation just the same way as you do with bigflips. The main difference is that when doing a Bigflip, you need to catch the board in a Varial Flip position and then add a turn with your body to lead the board to go down with you. When doing a Biggerflip, you need to focus to catch the board into the 360 Flip position and then go for the extra turn with your back side 180 rotation. It will take time to adjust everything the right way but if you love it it`s nothing but joy!
Same as with Bigflip you can help yourself with kind of a “powerslide” landing, which means you can slide out that last part of the turn on the ground. It will be much easier in the beginning but when you start to feel it good, you should not hesitate to get it clean!