I FINALLY turned in my very first paper for my very first class. I've been stressing about this paper for literally weeks (I started the class over a month ago). It's on a topic I have no knowledge or interest in. I would write a little, then get stuck and walk away. Then stress about it and avoid it for days on end. I finally made myself finish and submit it on Monday. I thought the paper totally sucked a$$. I got my results back this evening, and I passed the competency. I easily could have finished this paper two weeks ago, but I was trying to make it perfect, and stressing that I knew it wasn't (and my way of dealing with stress is by avoidance).
So, lesson learned - they don't expect perfection, and the fact that you don't get letter grades in this program should help you realize that your work doesn't need to be perfect, just acceptable.