I agree with the comments above Ditch the parsley in between the chicken pieces and try to stagger the ribs more so the back row is obvious. You've judged, so think about how long you had to look at a box and determine your score.
The meat looks generally good, but its the little things that will move you up a oint in appearance. The thigh in the center of the bottom row probably could have been trimmed more on the ends to make it the same size and shape as the others, and the lower right thigh is smaller and more triangular in shape than the others.
On the ribs, go bacck and touch up the glaze to get rid of bare spots or this spots. The left hand rib has a big bare or thin spot right on top that draws the eye. also, try to pick off obvious dark bits. the second rib from the left appears to have a pice of dark stuff near it's bottom end.
Some of these things may not have been noticable to the judges but when you have time to study a picture they standout :-D