*Sits in crater* Don't forget to make it all uneven ground in der' basin if you can manage it. Ya' gotta' think planetary impact. One rock hitting another rock. Or a sinkhole. Depends on your celestial body.
If you wanna' get a little more creative and fantastical, think about what you can place inside your crater besides rocks. A bubbling, steaming acid pool, perhaps for up-close shots.
I'm no expert on space subjects, mind. I'm just putting in my two cents.
Can't wait to see the continuation pics.