I'm entering my third season so still learning a lot. But thinking back to our first year, a few things come to mind.
Our boxes look like crap, very messy.
We were very disorganized, lots of misc stuff laying around on our prep table.
Our prep table was too low, which killed our backs.
We had a hair in one of our boxes.
And we stressed out too much, we're doing this for fun after all.
Best if luck in your first comp, you'll be hooked!