About "Trompe L'Oeil
Trompe l'Oeil (Tromp´- loy) noun - Literally translates from French to mean "deception of the eye." Trompe l'Oeil pieces require meticulous attention to detail on the part of the artist. Proper sizing and every detail, nuance of light, gradation of color and perspective must be skillfully incorporated in order to make the two-dimensional work appear to be three-dimensional and real rather than painted.
   
The story of Zeuxis and Parrhasius
Zeuxis (of Heraclea) and Parrhasius (of Ephesus and later Athens) were painters who flourished during the 5th century BC. They are reported to have staged a contest to determine which of the two was the greater artist. When Zeuxis unveiled
detail of "Time and Sustain" by Slade Wheeler
his painting of grapes, they appeared so inviting that birds flew down from the sky to peck at them. Zeuxis then asked Parrhasius to pull aside the curtain from his painting, only for Parrhasius to reveal the curtain itself was a painting, and Zeuxis was forced to concede defeat. Zeuxis is rumoured to have said: 'I have deceived the birds, but Parrhasius has deceived Zeuxis.' In other words, while his work had managed to fool the eyes of birds, Parrhasius' work had deceived the eyes of an artist
The story of Giotto
Another story tells of Giotto when he was still an assistant in the studio, he once painted a fly on the end of the nose of a man in a painting being worked on. When the master came back the next morning, he tried repeatedly to brush the fly off the canvas before realizing it was painted on.