Get back to the girl's layer and apply the Patch Tool to get rid of the skin's defects.

Autumn photo effects in adobe Photoshop cs

Take the Smudge Instrument and make her hair look smoother.

Autumn photo effects in adobe Photoshop cs

Change now a little the layer's color, applying Image – Adjustments – Curves (ctrl+m) and Image – Adjustments – Selective Color.

Autumn photo effects in adobe Photoshop cs

Decolorize her teeth making
them look whiter by using the Sponge Tool of a small size.

Autumn photo effects in adobe Photoshop cs

Make her eyes look more expressive by using the Smudge Tool and blur the skin around her eyes and the eye itself. Apply then the Brush Tool and paint the eye's pupil. Outline the eye above the upper eyelid also.

Autumn photo effects in adobe Photoshop cs

Correct the same way the background's color and the cat's color (Curves, Selective Colors).

Autumn photo effects in adobe Photoshop cs