Made the Raven skull (scan?) into a mask. NOTE! You will have to scale this to fit your head. It fits my head scaled up to 115%, you might want to scale to 120% just to be safe.
13 percent 3D cross infill
I removed all the internal structure in the skull mostly, thickened and thinned some walls, removed the bottom jaw/beak. For added strength I print with 3 outer walls.
Once the files printed in PLA, I sand them, use a lighter to get any rough edges smoothed then I hot glue all four pieces together. After that, I use acrylic paint to cover up any visible hot glue, then I rub tea candle wax over the entire surface of the print. After that, I light a tea candle and carefully dance the flame over the un-melted wax until it melts and spreads itself evenly over the PLA surface. This gives the file a nice feel to the touch and makes it shiny.
I found an old Velcro VR headset strap I used to attach the mask to my face. Your on your own here, find something to match whatever color your final mask would be.