i wish i can explain your head print is flawed but feet is good.
untill you have another commission still have same problem.

again nice work. funny i barely hear your say Super Sculpy nowadays.

(have free time or resources. try experiment 3d printing a small but tall piramid
one print flatbase and one print on the Pointy at base.
hoping this is the problem you seek to fix.)

I haven't used super sculpey in years, my new sculpting medium is apoxie sculpt, it self cures without the need for heat and is much more durable. You should watch the video to see how the head originally printed, I think the model is just too complicated for the default software I use on my printer to slice properly, but I don't know enough to set up my own gcodes.