The image overall looked too dark and didn't give off the upbeat feel that I felt the album needed so I went about brightening the image using a series of adjustment layers.
Brightness/Contrast:
Hue/Saturation (to create a stylised, more surreal image):
Hue/Saturation 2 (yellowed the tree leaves to match the yellow on the digipak):
Hue/Saturation 3 (reddened the jumper stripes to match the hue of the pink record label logos):
I then saw that the blue in the title highlight didn't quite match the blue in the photo, so colour matched it using the eyedropper.