Rules to follow during a kaizen
There is no hierarchy during kaizen. You could be the president of the company but when you are in a kaizen, everyone has an equal say.
Aspire for 'perfect solution' but ensure it doesn't stop you from implementing a 'better solution'
Use your mind before you use money. Think simple and don't rely of fancy solutions
Criticize an idea not the person who gave that idea
When someone criticizes an idea it's about the idea not about you
No matter how much you plan, there will be problems while implementing a solution.
All the members of the kaizen team are responsible for sustaining the results
Finally -- Just Do It. Do not over analyze. The cost of wrong decision is less than the cost of no decision.