This method is so simple and turned out to be really pretty and pleasing to the eyes.
thanks toCurly Madeon YouTube for this wonderful idea.
Get the large piece of white fabric and soak it in water, then wring it out.

Image Credit: Curly Made via YouTube
you might use an extra or scrap white fabric to test the color, then adjust if needed.
Just double-check to make the color a little darker than what you want the final result to be.
Let the fabric dry overnight on the table, then after drying, start sewing the fabric together.

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