Seanmoore this image was shot with an exotic camera - Fujifilm S3 Pro UV/IR,
which to start with makes the image look kind of yellowish, greenish, pinkish.
Afterwards all I had to do was to adjust the light and play at tad with colors
in PS. No trickery of any sort or even layers were needed.
The Fujifilm S3 Pro UV/IR is usually used for forensic work because it gives
details usually unseen to the naked eye. Hope this helps to demistify the
process.