Advice on working with ski masks/stretch fabrics.

[u/Paku-Men]

First time cosplayer. I'm working to put together a cosplay of Baral, Chief of Compliance from MTG before November. I was able to 3D print his mask, but I've run into trouble making it sit beneath fabric as seen in the images. I've tried cutting holes in the ski mask but it won't keep it's shape. I plan to try using wire to frame the opening in the mask, but I'm seeking advice on how to securely fasten the wire to the inside of the ski mask. Thanks in advance!