Though I love your subject, and the concept, I really feel like I want to see much more of the subject and much less of the distracting elements of the shrubbery.
This is a pleasing photo to view. I like your composition but would crop it to just under the window ledge. The larger plants in the foreground distract from the subject.
Cats do have domains, that's for sure! I would like to see more of the cat and window and less of the plants. Perhaps if you turned a light on inside, the cat would be more prominent.
A very nice image. Using the plant in the foreground to create depth in the photo is working very well.
Personally I would have cropped off the upper horizontal part of the window-frame. I think it will make the photo less crowded and the remaining parts of the frame will act more as visual guidelines towards the real points of interrest (the cat and the plant). Just my opinion though :)
I think that perhaps the large leaves lower right (elephant ear?) could have been cropped a bit more toallow for the textures of the cat and the flowers to balance each other and "finish" the angle of the shot