You could've done MUCH better on this. First off, I'm going to talk about your anatomy. Your cat has no shoulders, or second ear. It has no muzzle. It has no neck either. And the toes aren't sideways. This cat has turkey legs. There doesn't need to be a curve like that, nor should there be that unneccessary line in the leg. The base of the tail is too wide. The cat needs to have the bridge of it's nose. Also, cat's whiskers do not protrude from the nose, nor is the nose round. The pupil should be black, and where you coloured it white should be the eye colour. Your shading is very bad. You shaded it on the back, where the lighting should be. The shading on the muzzle is okay, but the front leg shouldn't be shaded. The background is dull, and you should've been not lazy and used a smaller size for the grass brush. Blades of grass are not that big, unless your cat is the size of a mouse.
The shading is poor, The anatomy is bad, The grass looks...weird, And there are some places where you got out of line. Also, The back leg looks quite strange. On a scale 1 to 10, I would rate it a 2.5.