I like the subdued colors in this and the partial silhouette of the cat. There is quite a bit of jagginess visible in the grass. You may want to try a different resizing method, some of them will give smoother results than others. Also, you only used 590 pixels for your image, when it could have been up to 640. Also watch your JPEG compression settings. Using all the available pixel size and file size will help maximize the detail in your entries.
I think for the tilt to work for this image it needs to be slightly less. Also, a lens hood or something to shield the light on the left would have helped reduce or eliminate the pinkish area in the image.