So, in my ongoing attempt to create a “x-ray”-like effect in photoshop (one of the tasks stipulated), I came across this particular combo. The image is composed of two base images - a Backscatter SEM of Trabecular Bone Structure courtesy of Duncan Bassett, Alan Boyde & Graham Williams; a vintage polaroid image courtesy of PSDGraphics.
I think this looks better than a pseudo-xray.