STL Mask Mesh Enhancement

I already have a printable mask saved as an STL file, but I need the overall shape refreshed with a clean, integrated mesh pattern. The job centers on modifying the existing geometry, not rebuilding it from scratch.

Here’s what I’m after:
• Import the current STL into your preferred editor (Blender, Meshmixer, ZBrush—whatever you’re fastest with).
• Add a consistent mesh detail across the main faceplate so it looks intentional, not patched on.
• Preserve the mask’s current scale and key fit points; it must still sit correctly on a standard head form.
• Return a watertight, manifold STL ready for slicing, with no non-manifold edges or print-blocking artifacts.

I’ll provide the original file as soon as we start. Feel free to share quick screenshots along the way so I can confirm the pattern density and placement before you finalize the export.

If you have experience tweaking cosplay props or other wearable prints, you’ll know exactly what I’m looking for.