get an image (or just geometries) and add (e)=>{timetolive = 0} in its onspawn (dont resize after adding it) and position your camera exactly to the images position and hit save and share, if you plan to update the scene, you must do it again
"Guest is the name of the first account to join, the account was a test by an admin because it joined in 1970/01/01 at 00:00:01., had not uploaded scenes or comments and has 33 subscribers. The profile id for guest is 1
Guest was made right before algodoo got released in 2009 by Emil Ernerfeldt who is a really good physics engineer, Emil Ernerfeldt made this account to test out algodoo and algobox."
Source: Algodoo wiki
it may not be right, hope this helps!