The approved concept sketch is used as a guide for the refinement of the line art. If the client requires vector art, the sketch is imported into a vector program (we use Xara Pro Extreme). Very carefully, we re-draw the character with smooth, precise line, selecting line style and thickness that best expresses the character.
When the vector art is completed, it is exported as an eps file, converted to a jpg and sent to the client for evaluation. If the client requests changes, they are made until the client accepts a final refined line art version of the character.
If the client prefers raster files, we refine the character line art in Photoshop or Paint Tool Sai.