You dip and drive forward in your jerk (from the side, if you trace the path of the barbell, it makes a 'V' shape when it should be pretty much straight up and down). A cue I find helpful is to get a big chest/good posture and try to maintain it through the dip and drive. Also, keep the weight near the heels throughout.
Also, you could use a bit more depth in your split position -- right now you're landing with your rear foot flat and your leg straight.
Your 3rd snatch actually looked the best out of all of them (I think you hopped back a few inches on the 2nd attempt).
Just keep working on getting a faster, more powerful extension. And keep squatting
btw, congrats! This is your first meet right?