@ njc6425: no problem My process for this has been pretty scattered to be honest.
I took a look at what I wanted to create and for me hard surface models are really hard to create in Z Brush. Also I am fairly good at sculpting but I am much better at bump maps and photoshop tbh.
Thats exactly what I did.
I spent a day or so and I painstakingly made these bmp maps
btw I made a custom brush for the clouds.
From there I masked the area inside of Z Brush and used Inflate mulitple times which gave me the Direction I wanted but it was far from perfect. I went in and worked on the medium detail shapes on a lower sub d level
after that I used Claytubes and the defalt brush and I started chipping away to add a aged look.
I made some crack alfa's
It's still a WIP for sure but I'm feeling fairly good the direction I'm going.