I choose crater Tycho as target to model, because I found some very detailed pictures on the internet by the Japanese Selene-mission (Jaxa). Crater Clavius was the second choise (as reserve). While everybody started working on Tycho, I tried Clavius.
With only primitive material (clothes-peg and ballpoint) to work with, no experience with claymodeling (except somewhere in my childhood I guess) and 90 minutes of work, I never thaught to have a such nice result. You have to try it yourself!
I'm still collecting pictures from the the other craters. You will get them soon. Meanwhile, here's already my crater Clavius. Hope you like it.