The lipstick looks orange; I think that a rusty red lipstick would have better complemented the sepia-like tone of the rest of the image. The placement of the kiss is also somewhat hidden in shadow. It might have produced a stronger effect if it were on the cheek.
The focal point of this photograph is too mired in shadows to be entirely useful. The sepia is also a little too strong, and doesn't mesh with the mood that is trying to be displayed, in my opinion.