Paint ánd perhaps shorten the nose(hair).
Foundation of the mask looks good though.Reminds me of the CFX Imp mask.
If all else fails, you can open and use this with pepakura software:
Mobile - Marvel Future Fight - Green Goblin (Classic) - The #1 source for video game models on the internet!
www.models-resource.com
Good luck with your project ! Don't forget to start a build thread at some point.