3 Signage Must-Do's

The three most important rules about signage...
Location
"Internally or Externally"
Signs are among the most important elements of visual communication. 
Style
"Consider Language and Colour" 
Too wordy and you're ignored - Too dull and you're missed
Size
"Bigger is not always better" 
Too big and you're a distraction - Too small and you're overlooked