Can Holograms be Made of Flat Art Work?

Can Holograms be Made of Flat Art Work?

A hologram can be made from flat art designs but it will not add any depth which was not originally there, similarly photographs reproduced in a hologram will only show what is in the photograph. The holographic process cannot add depth to a photograph being made into a hologram

True-colour holograms can be made, but the true colours are viewable only at one specific angle and once you shift your view point the image will cycle through the rainbow spectrum.