Cool skull keychain, using the model by LeFabShop.
For best results print with supports, 25% infill, and .2mm layers. The high infill helps support the overhang of the rounded head.
An extra file is provided with an added base to the keychain. I found that printing this helped it stick, as it is such a small model.
The high infill helps support the overhang of the rounded head.
I added a torus and a rectangle base to the skull using 123D Design.