Those are pretty. Do you cut out your basic shape with a saw to start with? Where do you get your rawhide from, I looked all over for some of that a while back and couldn't find anything?
Your brown streaked obsidian looks just like some here that got melted when a high power line went down and made a column about 20 ft long and a foot in diameter.
I really like the one with the little eye guard, nice job.