Printable Ghost Pen Holder

I have sketched a small ghost that clutches a single pen and I now need it turned into a production-ready 3D model. The piece must be split into sensible sections so I can print it on an FDM machine, then glue or snap it together cleanly. Please keep the interior hollow to save filament and allow me to tuck a bit of weight inside the base if I choose.

I will need the finished file in STL format only. Include any alignment pins, tolerances, and recommended print orientation that make assembly straightforward on a typical hobby-grade FDM printer. Subtle surface details are welcome, but make sure every overhang remains printable without extreme supports.

Deliverables
• All part files in STL, clearly named
• A quick reference image showing how the parts fit together
• Brief notes on layer height, infill, and support settings you tested or suggest
- model must be a specific size to hold a pen (I will send measurements of that)

Once everything loads cleanly in my slicer and the parts dry-fit as intended, the project is complete. Looking forward to seeing this little ghost come to (after)life!