IMHO, the chunks seem like an unwieldy size, I'd consider breaking them up a bit more. Also, I'm thinking the appearance is actually too heavy on the bark (esp the left side). Adding some pulled as the other guys suggested could help that too.
That said,my team's appearance scores for pork would suggest that I'm in no position to give advice on the matter. I'd agree that pork is the hardest to present.
22.5" OTG, 2 UDS, Mini WSM "Jose Ahumado", Orange Thermapen