Replying to BackFlip Fridays

So I have been doing backflips at the lake all summer, at the pool off the diving board, and just lately into a pile of snow off a picnic table. I have done great off of cliffs at the lake and the diving board, but I have been having a rough time getting all the way around off the picnic table. I wanna take my talents to the hill this winter, but am nervous. Any suggestions? I also seem to have a hell of a time registering what is happening when I flip I just do it, is that normal? Post videos of your own backs to! Thank you!