Keeping your lens in the center of the artwork,
slightly tilt the camera up to top left of the painting. Shoot your first segment photo, capturing the whole edge of the painting.
Next, (continuing to keep lens in the center of the artwork) slightly rotate camera to the right to capture the next segment photo, slightly overlapping the area of your previous photo.
Continue in this way, shooting each area of the painting, moving to the right, then down, across the painting, then down again, to the right, across the artwork until you have captured segment photos of the whole artwork,
always keeping your camera lens located the same distance from face of the artwork and in the center of the artwork.
Make sure you include all the edges of your artwork!
You can shoot and upload each segment photo while in the app, or if you shoot your images earlier, you can start the Create a Zip process and upload the images directly from your photos or files).