After an organization selects an artist, what issues should be addressed in order to secure the commission?

The artist and commissioning organization should both sign a written agreement that addresses, at minimum, the scope of work, the budget, and the schedule. It is also important to clearly articulate the process by which any changes to the project will take place, and any changes should always be made in writing. You can find sample agreements and contracts under the “Resources” section of the Americans for the Arts website. 
The commissioning organization should also provide feedback to the artist from the selection panel and note, for example, what aspects of their work were particularly well received and what aspects may need further attention.