I'd been trying to put my finger on something about the court clothes that was bothering me and I finally figured it out. In standard courts, the designs actually have black borders all over the place separating patterns and fields of color. Yours is lacking this and it makes the garment seem more like an amorphous blob - as mentioned earlier, a muu-muu. The lines give the garment pattern at least some structure - it can't correspond exactly to a real-world court costume because of the two-headed nature of the art, but it does at least resemble a king's finery more closely.
Out of curiosity, why are you even using a traditional-style court? I'm assuming those faces are of people you either know personally or know of. Why have them dressed in 600-year old clothing? Why not create something more contemporary - replace a censer with a cellphone, swap the sword for a cricket bat or a lacrosse stick and so on? It might help give you a theme for the deck, and contemporarily-clothed courts appear very infrequently so your deck would stand out more. (Just watch your proportions!)
FYI: regardless of whom you've chosen to be on your court cards - friend, celebrity, family, athlete - obtain model releases from them. It's easy to find generic boiler-plate ones online that cover most contingencies. For legal reasons, most printers, especially USPC, will require that you have all the rights to the images you use in your design - no releases can quickly result in no deck.