In my honest opinion, you need to work on your presentation. For instance, your putting greens could be neater. Your arrangements should be symmetrical, with all the pieces looking almost identical to each other and spaced perfectly. I don't love diagonal presentations, but that's a personal preference. The sauce should be neatly applied and should shine. The box should be as full as possible, but should show a border of the parsley and the border should be neat and tight and even. Each box should look like it's ready for a magazine cover and make you just HAVE to eat it.
You're asking for opinions, and opinions are subjective, but here are mine. I am a KCBS Certified Judge, and here's how I would score it and why:
The color of the chicken is dark and the skin on some of the pieces looks thick. The thighs are too small for my taste, maybe six bigger thighs would look better? The skin is shrunk back on some pieces and not on others. I don't love the shape of the pieces.
Appearance: 7
The ribs look good, with good color, but I think you're showing too much green and the green that shows is not tight and neat. The ribs are not all the same size and shape, but they all neatly cut and appear to come off the same rack.
Appearance: 8
The pork overfills the box, the arrangement is too random and the spacing on the slices is not perfiect. The parsley just pokes out here and there and is almost completely hidden. The sauce on the front piece is a little sloppy.
Appearance: 7
The spacing on your brisket slices is uneven and the edges don't line up perfectly. The front piece looks like it has a seam or fat line in it? The parsley is not neat and tight. I know you said you evened out the sauce, but I can only judge the picture.
Appearance: 7
With good scores in taste and tenderness, you could still do very well in a comp with these entries, but a little more effort in the presentation will improve your chances. Good luck!