A harder rectangle knot
(click image below to go to animation)
This is a slightly more difficult knot to make. Once you can make this knot, you can use the pattern to make lines, borders, etc. Instructions to do this to come. If you click on the small image it will bring you to a bigger one.
To begin draw a light pencil grid of 9 boxes across by 5 boxes down.
Step 1: Draw each of the 4 corners and a + in the center. 
Step 2: Draw the 8 outer curves. 
Step 3: Draw second lines. Space can be as thick as you like.
Step 5: Erase the crossover points. Remember the over/under rule. Start at one corner and go over the first line, under the second over the third, etc.
Step 6: Use ink to darken lines. Let ink dry then erase grid.Step 6: Add color.
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