Build A Concrete Bathtub How To Build A Concrete Block Shower?

How to build a concrete block shower? - build a concrete bathtub

Who wants to build a concrete shower in one corner of the basement with the walls of the basement Curent. Does anyone else have that now, a photo or an idea or a suggestion of how to go about sending a building. Furthermore, I have to the blocks, if I want to paint finish, you have to paint a marine?