We'll start with a gradient of warm color. Bring up the gradient editor and add color points as shown, then apply.
Drop in and clearcut the skull, then use the EDIT>TRANSFORM>WARP
tool to distort the image to a suitably scary state. DESATURATE to
lose the color. I applied a PLASTIC WRAP filter to give it some sheen.
SKULL COLOUR - We'll place the skull large at the
top, and add a layer style by double clicking the skull layer in the
layers tab. We'll give it a COLOR OVERLAY (we'll use a lot of these)
setting the color to a bright orange and using a vivid light blend
mode.
SKULL SHADOW - Duplicate the skull layer and
erase all but the areas you want deep shadow. The eye sockets in this
case. Then adjust the layer style to a deep brown with a COLOR BURN
blend mode
SKULL HIGHLIGHT - Duplicate the original
skull layer again, remove the layer styles and crank the contrast right
up to get a few strong whites for highlights. Set the layer blend mode
to SCREEN. This will give the teeth some punch.
Now we'll flatten the image and apply a little DRY BRUSH filter and some NOISE to give it a painterly gritty effect.
Ok that's the background. Now a backdrop to frame our 'hero'. Drop in
some background rock or tree life, and DESATURATE. Apply plenty of
contrast for deep highlights. Now apply another COLOR OVERLAY layer
style using a deep brown color and linear light mode. Set the layer
mode to SCREEN.
Now DUPLICATE the layer, remove the styles and set the layer mode to
HARD LIGHT. A little DRY BRUSH can't hurt either. Erase the edges a
little to blend with the background.
Now let’s add some steps for our hero to stand on - another greyscale
image with a COLOR OVERLAY layer style. This time set to SOFT LIGHT
mode and a light brown color. We set the layer mode to LUMINOSITY on
this one. As you might be starting to guess, there is experimentation
here. Play. Learn. Enjoy.
Now we pick up speed. We take our Aztec carving, color it rich blue
using the HUE/SATURATION tool, hollow it out using the eraser tool and
place it at the base. Then we create a new layer and paint over it
with black (with some opacity) so it's subtle.