I mixed this tutorial : http://www.epbot.com/2011/07/how-to-make-steampunk-goggles.html

with this: http://fenris-the-red-wolf.deviantart.com/art/Steampunk-Goggles-A-Tutorial-91226763

Here they are! :)

For the lenses: I used clear thin plastic coloured wth green nailpolish.