Thoughts on this one Raf... I just had this discussion with a chick who wanted me to tattoo a purple flower in middle of blue waves.
If you go dark with the skull on a natural toned body you wont really see it. The contrast from the medium brown to black isnt so high. Also since the skull is inset its going to naturally have more shadows on it so at a distance it will look like a black blob from more than 2 feet away. You could up the contrast a bit by going with like a white body but still the shadows on the skull will make it very dark.
The best way to make it pop would actually be to make it light. I wouldnt paint the eye sockets and nose cavity black. At the most a medium gray you want them to at minimum show shadows and depth if you black them out they wont show anything. A better idea would be red eye sockets that fade to yellow in the centers.. make sure the brow ridges and cheek bones are very bright so they stand out and you can clearly see the defining features of the skull... Then use black for like the cracks and to define things like the teeth then fade the edges of the skull to a medium gray. Like this you can now set the skull on a darker colored body and it will stand out. Black would be ok but you will have black framing the skull anyways you can get a bit more visual dynamics by using like a dark blue based red.
Ok enough rambling but yeah just a thought.... didnt want to see you put all that work into it and have it disappear and only be seen when its in your face.
