I'm newbie on this forum. I'm 28 years old, french guy and I ride an 1100GL 81 (it has 100 000 km

Few days before the cylinder gasket broke down, so as winter job I decided to fix it.
I'd like to share how I'll fix it but I don't know how to create a "how to article".
Can someone explain me the process?
Thanks ahead!
Clément.