Marbella8 - I will try to explain. It is a bit tricky at first but once you do it a couple times, it gets easier. MaiTai calls this the asymmetrical knot but I find her instructions are overly complicated.
First, fold your scarf in a rectangle
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Then grab the lower left corner and the upper right corner with your fingers and pull. You should get something like this.
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Then you need to wrap this around your shoulders like so. It almost looks like a cape but there is no fabric in the back. The 2 triangles are draped over both shoulders at this point like so.
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Then take the two points hanging down and tie a knot. I like the tails short so I tie a knot about here
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At this point it looks weird but one twist of the scarf about 90 degrees should get a triangle in front and voila, you have a non puffy cowboy. There should be a small triangle in your back. Just tuck that into your shirt and the scarf will stay put
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As you get better you can actually choose which triangle and which side of the triangle you want to show in front. This gives you a lot of scarf featuring options. I hope this helps. Let me know if you have any questions.
Sorry, don't know why there is a random pic of step 2 below. I can't seem to delete it.