http://creativedoodlingwithjudy.blogspot.com.au/p/easy-celtic-knots.html
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To infinity and beyond, above
  1. d effects below
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How you might start a drawing below
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Some patterns and ideas. But where could you get your inspiration from?
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Below some ribbon concepts
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Notice the 3d effect used in the drawing below6d81cd0136074bbdfa1ffa689f96258f.jpg3c3f104980f504f4ce3cb0c3a5beb304.jpg