3D ears are tiny and super hard, so there is a 2D option also. The extra layer of hat is also pretty fiddly - it makes a very thin L shape. From Twilight Forest Mod (more info & download here http://www.minecraftmods.com/twilight-forest-mod/)
1. Click on the papercraft design image.
2. Make sure it has not been resized by your browser (you might need to click the image again).
3. Print using your browser's Print function.