
The "What" is subject matter. Are there people being painted? Are there architectural elements involved that need measurements? Is it landscape?
The "Where" is location. Is it on an interior wall? Is it on a smooth or rough surface? Is it on a ceiling that will require special accessibility? Is it at a place of business where customers are nearby?
The "How" refers to detail and medium. Any painting can be painted in a simplistic style and still look beautiful. The same painting can be done with full, 3-Dimentional detail. Will it be done in oil or latex? Will it be done on canvas?
All of these variables will be worked through usually after the initial FREE consultation with the client.