What is Faux painting?
In a practical definition, it is the application of paint or paint related products in any method other than a standard brush and roll.  This can include trowel finishes, plasters, lambs wool creations, rag finishes, and the list can go on.

In a technical definition, it is the recreation in paint of natural occurring materials such as marble and wood grain.  Which leaves out a lot that is commonly referred to as faux painting.  To be truly correct, all other painting other than brush and roll is Decorative Painting.  This definition is strictly adhered to in Europe, but in the United States often times the words Faux Finish and Decorative Painting are used to mean the same thing.