Please Look After This Kitten

I like the shape of this image - the square mirrors the cat's shape of head without constricting the photo. The contrast is lovely, with the white whiskers and black nose really standing out. You've captured the texture really well, with the fur looking very lively. Your use of blur for the small area of chest we can see and in the corners compliments the texture.
The look in your cat's eyes is classic - it definitely has the "aww" factor and makes me laugh a little as well!
Perhaps this photo would be improved with more detail on the eyes? Also, the ear is not included in the frame. This is the one constricting area of the photo.
My last criticism is that I've seen pictures like this before - this photograph is by no means unconventional. However, you've managed to capture "cute" without adding "twee" into the equation, and that is to be admired.