Here is a Deer Head mode for you. You can use it for 3D Printing or something like else. And you got a nice neckless. Maybe you can sell the model after printing. It's STL Checked. No errors, no openings and something else. It's all Quads no Tri's even.
There is a Turbo Smooth modifier on it. You can remove it if you want to.
Images are rendered in Turbo Smooth - Iteration Level 1. You can use higher levels.