Head sculpting..RAH edition

Any advice to get my sculpted head to the exact proportions to fit a RAH body....I figure I am going to sculpt the heads and commission people on the board to do casts for me.

Any advice on how to get the tabs and the neck ball to perfect proportions before I send it out to be casted? I am sculping a skull for Deaths Head leader, Black Plague which will be loosely based off of the Blind Dead skeletons(he leads the Range vipers).

I think my Team leaders should have unique heads and not be just repainted/frankensteined figures.

Any advice to get my sculpted head to the exact proportions to fit a RAH body....I figure I am going to sculpt the heads and commission people on the board to do casts for me.

Any advice on how to get the tabs and the neck ball to perfect proportions before I send it out to be casted? I am sculping a skull for Deaths Head leader, Black Plague which will be loosely based off of the Blind Dead skeletons(he leads the Range vipers).

I think my Team leaders should have unique heads and not be just repainted/frankensteined figures.

Ok if they are going to be individuals then WHY would you need to have them casted????????? As for the neckball I'm sure casters can have it where all you'd need to do is glue the head to the neckball thats already casted.
Casting heads are only good if your going to be selling more of the heads in the future. And since Ebay hasn't listed any casted heads in a LONG time I doubt you can sell them there.

Oh, I plan to eventually sell my sculpts....

But I want to do casts, because resin is a better material than sculpy.

just take an existing head, dremel off the face and whatever you dont need then sculpt directly onto the head with apoxie sculpt or greenstuff