Well I'll go in the order they occurred. (The falls worth mentioning in my 6 years of riding so far) I personally don't think I had any bad falls yet.
-2nd year of riding, caught an edge on some stupid trail, nothing worth talking about, fell and went to cushion the fall with my right arm, fractured my wrist. Ever since then I've always been careful when it comes to trying to cushion falls, that was a dumb ass injury.
-in between my 4th and 5th years of riding me and my friend decided it would be fun to hike around my neighborhood one year when we had some snow and find places to go riding. Well we made a small jump, and there was some foliage or something sticking through the snow right before it, some how my board snagged on it, and I went flying into the air and landed on my forearms, and some rocks/gravel put a 1 inch diameter puncter wound in my forearm. It didn't actually, I got up laughing but then saw the shit load of blood pouring out of my arm and was like oh fuck, it was pretty deep... only needed 7 stitches though ha.
- this year, doing a 180 somehow landed sideways, bruised my knee really bad (couldn't walk on it after I got home) Idk what I did to it but the pain went away, so I'm assuming it was just a bruise.
- this year, doing a board slide down a fairly steep flat rail my toe edge caught somehow and I tried to jump out of it as this happened. (only made things worse making me go higher into the air) landed pretty much strait on my face in the snow and my whole body arched over me. That was probably one of the scariest falls, because the noise it made, and it just kind of scared the shit out of me cuz I thought I was going to break my neck. I kept riding that day but I was dizzy for like 2 hours afterwards. My friends were all laughing about how it was the craziest face plant ever.

I just remember afterward lieing there and some dude asking me if I was ok, and how long it actually took my brain to formulate the words and say yeah I'm alright. Even funnier was how I started laughing about how funny that had to look to anyone who was watching.
Thats all I have worth mentioning, the shit that scares me from doing big jumps is broken bones, and getting pins and all that crazy crap. I don't want it. Cuts and bruises aren't that bad, but breaking shit not only sux, its mad expencive and it kills your entire season.