IMO, First it has to look appealing, really appealing like I can't wait to get a bite of THAT appealing. Then the aroma/smell has to make me want a bite NOW. Then after the first bite I can't wait to take a second bite kind of appealing. There are a lot of variables that come into play in those few seconds to minutes sampling/judging. Teams that win KCBS Sanctioned Events have found what's appealing in all 3 of the judging criteria (Appearance, Taste and Tenderness) and in all 4 of the meat categories. Murphy's Law is constantly working against them so a little luck helps as well... Cheers!!!
If Homebrew & BBQ aren't the answer, then you're askin' the wrong questions... Cheers!!!