Iv'e been in this game for 14 years, and have now moved to Ireland for family reasons. Hence, I am starting up again from scratch.
Therefore, every clean is a first clean at the moment, but I don't feel nervous about doing the job well, as I have confidence in my ability due to my years of experience, coupled with my practice of being very thorough.
We all know when we have done a good job, just as we know when we have cut corners (not that any of us would ever dare to even think about doing such a thing). So if you know you are doing a good job, you will have no need to be nervous about it.
If you aim for standards that you believe will exceed your customers' expectations, you won't go wrong.
John.