Combine the layers (ctrl+e) and start operating with the girl's layer. Here we have to use the Stamp Tool as a brush for making girl's hair livelier on the edges:



Select now the Blur Tool to blur out a little the entire girl's contour.



Now we have to create a mask out of the layer: Layer ? Add Layer Mask ? Reveal All and use the Gradient Tool of black color to hide the visibility of the chair's legs.



Apply now the command Layer ? Remove Layer Mask ? Apply to correct the brightness and the layer's contrast, using Image ? Adjustments ? Curves (ctrl+m).



The colors should be corrected also with Image ? Adjustments ? Selective Color.