Frottage...

"Frottage," explains the Art Teacher, "is bringing texture into your composition by use of an underlaying surface ...and
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... some
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transferance."
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Sounds a bit like psychology 101, A? lol
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This is a little more concrete, as in putting paper down on a side walk and rubbing your crayon over the paper will transfer the concrete's texture into your work - cool, fast designing, minimum work-efforts.
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I used a bit of fottage technique (I didn't know we had a name for it until now) when we practiced drawing circles last month.
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You can see I got bored.
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I drew the Apple, named it, Red Delicious and then the Atom looking thingie.
I drew an Orange - both naked and in full dress... which looked really blah until I went to the block wall of the Art room and added a little 'frottage'.
Click on the pix - you can make it larger which will make it easier for you to see the lovely effect the rubbing gave me. :) ... then came the tea cup.
This is all leading up to a still life...so...there will be more tea cups to come. lol