This is a free pattern,
It has video links taking you to my Youtube channel with free videos of how to do this technique. The pattern uses Mosaic Overlay Crochet, a method which allows you to work with one colour at a time, working right to left, attaching the yarn at the beginning of every row, and cutting it at the end of every row.

This pattern uses approximately 150/200grams of yarn, (half in one colour, half in the other)