Already you have more comments on this than some of mine even but I shall reply!
This is a lovely traditional medium picture! Its certainly very hard to fit in much at all when you're working with ACEO size restrictions! You have some good detail here and that kitty certainly looks like one not to be trifled with! Personally I think scanning ACEOS and displaying them bigger than they are in RL makes them seem a little blown up and rough looking, perhaps consider uploading them at real size? Either way incredibly awesome looking cat