Felonious, thanks for the tutorial

Please enlight me,
1. I really wanted a more uniform blacks, and I saw in your pics you have some more blackened blacks around the markers. What will happen if I just soak it in liver of sulfur mixture for several minutes ?
2. What if I use other method such as putting the solution of liver sulfur in a container, and put both that container and the watch inside a sealed container for several minutes? What will be the outcome differences?
3. What will happen, if after these patination operation, I did not polish or wash it ? Or just rinse it with water?
4. I think I may have difficulties in finding liver of sulfur in my country, can I use pipe drainer solution (some kind of ammoniac solution) as a replacement?
Thanks heaps