I am trying to decide if I want to tile my shower myself. Can I tile in sections on different days? Say if I can only get a few walls done and have to stop, is that ok? I have built an L shaped shower with a bench seat in the short leg. I am pretty confident I can do a good job but it may take me longer than it would a more experienced tile setter. I don't want to compromise the integrity of the shower. Thanks in advance.