Do-It-Yourself Tessellation Project: Easy Paper+Pencil Equilateral Triangle Spin Method
Step 25 of 28: Make the outlines dark, thick, and black.
Use a medium-thick black pen to make the outlines (but ONLY the outlines) black and thick.
In the photo on this page, do you that the outlines are black and thick? Do you see why ONLY the outlines' lines are thick and black? Strong outlines make the overall pattern easy to notice.
A Wide, Dark Pen.
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