Things I have found helpfull for artwork on a wall: I prefer to use a thin cube and use the object front setting to put the image on it. The cube has just a small bit of depth just like a real laminated poster. if you want you can also make a frame from 4 additional thin (but slightly thicker) cubes and pehaps place a glass 2d face or thin cube in front of the image cube. For a lay flat rug, again the thin cube works well with object top image. keyword: thin!

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