This 3D Steve design was inspired by an advanced steve I made in blender.

Tips:

For the teeth, glue them below Head 1, THEN glue Head 1 over head 2, and for the eyelids, same thing.

For the pupils, AFTER you have glued Head 1 to Head 2, glue the pupils to what's left of the eyes on Head 2.

For the eyebrows, just glue them on Head 1 AFTER you have glued Head 1 to Head 2.

Note that this is very hard, and it is not recomended for beginners. Hope I helped you.

EDIT If you would please, can you let me make the 3D zombie, unless you really badly want to make it? Thanks.

-AF28