This artwork can be viewed in 3D using the cross-eyed method of stereoscopic free-viewing.
With the screen at arms length, relax your eyes until the two images overlap. Allow a few minutes for your eyes to adjust properly. Following the movement of a single line can help them focus.
Focusing is easiest when the screen is rotationally aligned with the eyes. Slowly rotate the screen (or your head) from side to side until the images "snap" together.
When viewed successfully a crisp image with stereoscopic depth should be visible. Prolonged viewing (5 min +) is not recommended.