Here is the original image, the color on the face is a bit dull and low contrast, so i adjust level and curves in the new adjustment layer.
I wish to make it more vintage so i adding a screen layers of gradient map and adjust the opacity of the layer to get the color i desire:
at last i downloaded some vintage paper texture and add it on top the layer and you can play with the layer blend mode, this is hardlight mode:
here is the final image. You can create your own!