Thanks for the input. I will try to find the article. I dont want to use a pre-made base because the shape/size of my shower will not be standard and it would be to expensive to have one made. Also, I have some experience with mortar I just dont know the exact steps involved for this particular project and would have liked some tips. I am however, familiar with the basic materials needed and hopefully I can find some good references to use. Again, thanks for the input.