My first take is that I like the parsley with the chicken, but fill it out more evenly. If you're going to use it, make sure it doesn't detract,a nd I see a spot that's light in the upper right. The color looks good on the chicken, but I'd add some honey to your sauce or something to make it look less dry, though dryness can often be the photo.
Ribs look good, but I think it's getting too fancy. I think they would look better lined up. Use no lettuce or more lettuce. Buy more lettuce than you need to make sure you have plenty.
Pork looks something of a mess to me. Just make it neater.
Don't put the parsley on top of the last brisket slice. Let the judges see that slice. Slices look good, though.
I would use a bit more sauce on everything as everything looks a bit dry to me from the photos.
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