{5 minutes work}
This type of animation has inherent flaws do to imperfect looping and over exposing in the rendering process.
What I created was seemless loop free of flaws that can be pointed out at the resolution available at avatar size and retained the properties of a file of 300 MBs when reduced to the av size {less then 200 kb} a feat I was unsure of being able to conquer.
Thanks for the rep. And the compliment on my av... I knew you'd like it. Suddenly remembered that photo from a couple of years ago and thought... what the hell, no one will know! LOL. And, I love skulls!