Thank you for your compliments!
I can give a try to explain it. I'm a n00b on tanning and my english-skill are less than adequate...
Anyway, you take the skin (if it is dried or frozen) and place it in water until it is soaked (don't let the skin lie in water too long, or the hair might fall off
). Let it dry a bit and scrape the flesh-side of the skin until it's mostly free of gooey stuff like fat and loose pieces of skin and membranes (you can use a knife for that, but make sure it's not too sharp or it's easy to damage the skin).
For the actual tanning you need fat and proteins. Egg yolk/avocado + olive oil works fine. Mix it and coat the flesh-side of the skin. Let it be for a couple of days and rinse with water and soap/shampoo/whatever you've got at hand.
When the skin has dried it becomes hard, so it needs to be softened. This is done when it is a bit damp (if the skin is dry, place a soaked towel on it for a while); pull, squeeze, rub, play and dance with the skin until it has dried.
I hope that is mostly understandable...