The fastest way to patina your watch evenly is by a mixture of Liver of Sulfur. Eggs work but are slower and give a different patina. Another way is to accumulate sea water and just submerged it once in a while.
To brush off the patina, don't use cape cod or any polish, just submerge it in soda or lime and wait. When it reaches the shade you want, rinse it with warm water.