Weaving in my tail/two colored scarf

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i wanted to know how i can weave in my tail.
is it like sewing ? :shrug:
websites and diagrams would help.
Just out of curiosity how would i make a scarf with two colors
so it would look like this?

MINUS the flower patterns
Thanks everyone!
:hug: :heart:
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Here you go!
Weaving in the ends