Simply put...
image:
- Cropped the scan
- reconstructed the shoulder on the right
- wanted a blue tint to the scan, so I dabbled with different colour techniques

background:
- simple arrows in the direction of her leaning
- contrasting blue colours to offset the overall baby-blue background
- added random rectangular shapes climbing up the right side of the wall to give it some balance of both sides
- added text within the shapes
- soft overlay of pixel squares to give it some texture

and there you have it...enjoy