Neat picture. Love the framming you used. Its a bit soft which is fine but with that bright spot on the wall outside the window, it doesn't work too well.
The cat looking out the window is a great message for a "missing you" card. However, it seems a bit overexposed in parts, with no specific object in focus.
Very good idea. Fits the challenge well, IMO. Good composition. I think the soft focus/blur works well with the image in this case. I wish that wasn't a brick wall out the window, it gives kind of a restraining feeling to the concept of the cat looking out at the world for who it misses, if you know what I mean? , and it has that hot spot that seems harsh against the nice gentle softness of the photo.
I really do like the border for this card. What would make me pass over this in the card store would be the overexposed brick background outside the window. It really distracts from the soft whites of the rest of the picture.