That depends on what you regard as hard. There are necessary precautions, and equipment that makes it easier. I've written an essay on how I do it, and you can read that, and then send me a note with any questions: donsimpson.deviantart.com/art/…
Damn. No I haven't. But I will! Now first question is- where the hell did you get your awesome protective mask from? I have only used a simple piece of shit mouth and nose protection mask when I have tried some carving stuff. Did not think it was too great. Need a better mask. Thank you for sharing the link to your essay- I sure will read it! !!
I have an essay on the how, called "Carving Skulls and Stuff". It's in the Information folder in my gallery, and there's a link to it in the "Welcome" box on my main page.
Several years ago I was given a coyote skull that had washed out of a red clay bank out in the country during the spring rains. I spent a long time cleaning it and repairing it as much as was possible (parts were crunched), and that led into carving and adding bits. It was my dealer table mascot for a while, but I sold it to someone who valued it greatly. So a friend got me some other skulls to carve, and it went on from there.
That's awesome, really. Besides your amazing craftsmanship, what with always complimenting your medium and what-not, I should also say it takes a truly great person to reply to all these questions. Thanks for responding, it really does mean a lot, especially when you have so many others following your work.