My first free fall was from a Casa, and I learned from Casas and C-130s. I never did a door exit until about jump 23. It really helps when you're learning to dive to have the instructor poise out in front of you. My first jump, he had me put my hands on his shoulders on the ramp, and just lightly push him off. It will help you keep your head up, give you a target at 45 degrees to dive to, and it keeps your eyes off the ground.
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" Well, that's just, like, your opinion, man..."