The typical commission involves (1) a collaborative discussion around the concept for the commission; (2) an initial study for the work, sometimes in pencil, sometimes in paint, on a smaller scale than the final piece; (3) one round of revisions to the study; (4) the final artwork.
This depends on the size and complexity of the work, as well as the artist’s current project queue. Typically, a work takes 1-2 months.
Commission pricing depends in part on the complexity of the work desired and the size of the work. For ballpark purposes, $5.00/sq inch is a good rule of thumb.
Almost any size.