Top Ten Challenges--No. 9. Get the Designer to Articulate What the Owner Wants
Insanely great homes are built from a common language, a patron that understands what they want, and has the resources to get it done.
Establishing this common language, establishing the values and principles, and articulating this in a way your designer understands so that they can develop the working drawings is the next major challenge you face, after right-sizing your budget.
This is my post on why people build. It is the design, material, and recognition that drives your architect and your common language needs to incorporate these motivations. Understand what motivates your architect and you are more than halfway there.