The definition of miniature work is anything 4x4 inches and under. Most of the miniature work I create is in the form of ACEO's, which stands for Artist Cards Editions and Originals. The only requirement of ACEO's is that they measure 2.5x3.5 inches, the same size as a baseball card. The majority of my minature works are up for auction on eBay where my user ID is gnome_tree, but occassionally I'll have them for sale at the art fairs I do throughout the year. If you'd like to have a miniature portrait done please feel free to contact me for more information!