With a bird skull made out of polymer clay (fimo classic) it seems to be like with a lot of other "topic" beads. Somewhere on the line... I also make one. I also made owls. And other things... ;)
I like the look. Just to go freehand without the pressure to be perfect. The imperfections are what make the look organic... and gives it a rather tribal feeling. I added copper wire and oxidized it with the green patina from swellegant (Christi Friesen).
I was also asked to create one with night-glowing polymer clay! On top of my polymer clay to-do-list!