planetary terrain module help?

hi guys its David again and today I am here to asking a question.How can I can I figure out how to make a Venus planet module in the planetary terrain module that makes my planet have the look of this?

and another module that make another planet that looks like this in the inside of the planet?

I just want some help and ideas please because I don't understand how to operate with the generator,and operators a little bit and this is a point where I need some help that im struggling with?