After seeing this photo I can't help but always imagine George Lucas flying behind every Star Destroyer as if he were some kind of ghostly power behind them. In a way, he is the ghostly power behind all Star Wars creations, so it's not that far off. He's looming over that Star Destroyer like he's Darth Vader, isn't he? It's hard not to see him as some kind of evil overlord. He wields so much power being the creator of the Star Wars universe, but he also possesses so much good. He's kind of like his own creations of the Jedi and Sith.
That might be a miniature, but that Star Destroyer still is massive. It has to be considering there are other miniatures that have to fly around it. If they made it too small then the X-Wings would need to be the size of gnats.