If there is something that irks a fitter more than anything else, it's an actor showing up in the wrong undergarments. A costumer must have the correct foundation to build their garment upon, or else the project will not turn out.
Just like the costumer, we must make sure we have the correct foundation laid before building on top of it. Taking the time to start correctly allows us to work towards a polished product. This can be anything from having a clean face when putting on makeup to good solid facts when starting to debate a topic.
Before starting off on any project make sure you have the right tools to get the job started and finished. This will make your life easier in the long run and will stop you from spending your time reworking something that would have been perfect if the foundation was right to begin with. Don't waste your and someone else's time by "wearing the wrong undergarments".