Overall very good and I’d say excellent for a first comp/practice, you will do well.
To critique …
More trimming on the chicken to be more uniform, also bring the smallest pieces to the front.
Nice finish and uniform on the ribs, I would question if some would call that marking. You can show a picture to the rep ahead of time to clarify.
Pork looks great
Brisket looks very clean, speculating because I’m looking at picture, the cuts look very crisp … too crisp. I would be skeptical as to the doneness.
Lastly clean up the edges of the parsley in the box. Try to be more uniform at the edge. Again that is a critique not a comment that the parsley looks bad.