I'd suggest dropping this piece from the gallery for now and share it on the forums. i'm pretty sure you'll get far better feedback that way.

Nope I didnt base this on anything I saw. If you could help me to make it better and give it a better texture I'd appreciate it ,  I'm always eager to learn!

Actually backgrounds are rather unnecesary unless it actually benefits the sprite.

although in this case, i'd have to say the texture you're trying to put on the cat looks nothing like a stone surface mainly due to the fact that the shading is not really giving it any kind of volume or shape to the object. did you use any kind of reference for the texture? looks like something someone else did and you tried to this without really understanding how it works.