|I apologise, I am new to this and you are "stuck" with my comments. Pls. realise that this is *my* learning curve more than yours!
I don't quite understand how "dice" go with the theme of "A+B". Dice are used singly, in 2s or several, depending on the game they are used for.
In any case, I think the picture is very striking. IMO, I think this is really well put together with the reflective surface at the bottom. Love the crop and placement of the main object. Nothing to distract the eye. Your choice of shutter speed, IMO was also really good. This is one of my favorite photos so far, except that I don't think it is within the theme, or at least I don't "get it" :-(.