Needle felting, nuno and wet felting.(Click on pictures for more detail and feel free to leave comments, suggestions or questions .)
Oh MY Stars and Garters! These are just awesome. Your talent is amazing, your imagination is boundless.
Looking at these two, I think you are right in that it is the eyebrow/eyelid ridges that give some of your critters their aggressive look - the wide-eyed one looks sweet. A great experiment - you are always learning, very inspiring to the rest of us!:)