An image made by stitching together multiple separate images posted by an artist.
For example, a full body shot made by combining a lower body shot and an upper body shot posted by the artist as two separate pictures. Note that collages don't fall under this.
Stitches are generally not considered third-party edits because of their nondestructive nature.
When stitching images from lossy formats such as jpg make sure to export to png to avoid ending up with a lossy-lossy file.
