Commercial license: You can print and sell this model. The Skull mask eyes has grid holes where one can see clearly and two oval holes are provided on the back where an elastic/ velcro can be placed, you can also use a rubber band / old face mask's ear elastic for it, anything works. Nostril holes also provided at nose for easy breathing. The eyes and nose were painted with an acrylic paint marker. The mask is Unisex and currently adult size and can be scaled form any adult to kid size and can used for Halloween, fun and wall art. Request: Don't scare old and heart problem people. Video link channel: https://www.youtube.com/channel/UCl81Wd0-LmacT_TfOnIf2PQ (video available soon)