This picture is exceeingly endearing, if I might start by saying that. The composition is great, and your models look quite comfortable. The background doesn't take away from the girls even though there are objects there. I honestly think they add to the overall look of the photograph. Another thing I really love is how bright the girls' faces are compared to the rest of the photograph. The different facial expressions are also very sweet. And the darkness (I don't know if this was added or not) around the edge draws you directly into the girls. Nicely done!
The only thing I have trouble really understanding is the title. However, I do think that an interesting title adds to this very much. I can't help but wonder, "Did they do something wrong before this? Spill your drink and then try to look cute? Or is it a religious statement?" Having people think and draw on your art is a brilliant technique, whether or not used on intention.
The only other thing to comment on is originality. A picture of two girls isn't particularly original, but this picture in itself is very well taken, and the models seem unique. So it's safe to say that although the idea isn't very original, the photo is pretty unique in some ways.
Over-all, I'd give it 4.5 stars.