I have altered the first pattern in several places to make this revised mask. I eliminated the center forehead seam and replaced it with two temple seams which extend to the eyes. In addition to looking cleaner it also allows the eyes to have more shape. I also added a dart to the underside of the beak so that it has a better curve.
The first picture shows the left eye being stretched open with an acrylic ring. I have also added tabs for attaching the straps with three rivets.