The grain is effective but a more effective treatment would have been to crop the bottom as the image is too tall. The artistic impression is good, but it might have been a good idea to change from black and white to sepia or a more neutral tone. A good entry into the challenge and originally rated a 6, it has been rerated a 7 on review.
It is probably the effect you were after, the old school type, but I am not a fan of the processing, and the noise that it creates, the lack of contrast and definition in the subject as it gets lost amoung the background.
Looks like Sophia is about to go SPLAT! But cats seem to be able to recoveri n mid-air more often than not. Not sure what I think about all the noise; I suspect I'd like it better if there weren't parts of the chair in rather sharp focus. Kind of surreal and intriguing that the cat's not casting a shadow.