I decided to make a mask, for the fun of it and share it with you. It should fit your face as provided, but feel free to adjust as needed.
The attachment points are separate objects so you can edit their position if you wish.
Edit: I decided to make improvements on the design. Here are the changes:
MaskV1.OBJ | 10.7MB | |
MaskV1.stl | 13.3MB | |
MaskV2.3mf | 5.7MB | |
MaskV2.stl | 14.4MB |