Lavaback and Deathstalker from the game wild hearts – lithophanie 

THE VISUAL EFFECT IS POSSIBLE EVEN WITHOUT LED OR ADDITIONAL LIGHTS AT THE REAR. as you can see from the photos even by exposing it to the sun.With LEDs, it is more clearly accentuated

simple model for gift or as a collector's item

I created the image with certain plays of light to enhance the lithophane objects.It prints with any FDM, low speed, four perimeters and 100% infll. layer height 0.12