Add a highlighted spine to a model's image

This job requires a highlighted spine to be added to a single image of a person receiving treatment. The orientation of the spine should be anatomically correct, so i have provided you with examples of the kind of work i would like. The image from shuttershock need to be edited can be found here (i will provide you with a non-watermarked image when the project goes ahead): [login to view URL] Here are 4 examples of how the image will look with the highlighted spine effect: [login to view URL] [login to view URL] [login to view URL] [login to view URL] Only the spine (no ribcage) should be included in the final edit. The spine should be curved very slightly to adjust the model's body posture as it won't be straight since she is lying down.