You write vividly. Your verbs are especially strong. I do have to say, though, that I don't quite get it.
Is "death" in the literal sense? Is your video about death? Or are you referring to the idea that losing what you have shot and edited would be like a death? I think I would go slightly more concrete here. What do you do with the movies? If you share them online, make them just for friends, shoot for profit, or whatever, I think I would add that in. What have you learned from this experience? Let it tell a little bit more about how you are motivated to learn about things that interest you (and how that rolls over into the future with you as a student).
Your verb tense jumps. You start out with the past tense with your first sentence and then move into the present. It would be easy enough to change that first sentence to: "I start forward ..."
I reach out, gently altering a visual effect here, adding a crossfade there. I replay the scene. Still I am not satisfied. (seems a bit redundant?)
Yes, a bit redundant. You could try something like: I reach out, gently altering a visual effect, adding a crossfade there. I replay the scene, wracking my brain for just the right element.
I have taken no class on video editing, driven only by online tutorials and hours of tweaking clips to match the movies of my mind. I simply do it because I can. (I actually dont like this answer)
Hmmmmm ... I enjoy the creative process as much as the end result. (This would be a good place to tell more about what you do with the finished products).
A sense of completion; my duty is done. I am satisfied. (would like a better ending but cant think of one)
Okay, it sounds cliche, but how something like: I call it a wrap and start planning my next project.
"Initial panic turns into controlled self-drive." (can someone fix this sentence? i dont like it :/)
The initial panic ebbs, replaced by obstinacy.