Honestly, in terms of what you actually need to do, Yuletide is no different from any other exchange. If anything, it should mean LESS pressure because you can fade into the background more. Also, there's a higher chance your recip will get a treat than in other exchanges. The fact that you're worried at all and are on coal means that you have a much much higher chance if doing well than most people. You know to try to write something better than 1001 words if nothing, you know to check the DNW. You're golden. Stop stressing.
I've found that writing treats helps to loosen me up for my assignment, so could be something to consider.
Re: Noob Anxiety
I've found that writing treats helps to loosen me up for my assignment, so could be something to consider.