This is an overlay mosaic pattern worked in US terminology.
The Winter Warmers Scarf e-Book contains 5 different scarves that measure 1.8m x 15cm.
The pattern can be repeated to the desired length and width of your scarf.
You will need to know the basics of mosaic crochet but there are tons of videos for beginners on YouTube.
Mosaic crochet is a dense crochet, no “holes” so is ideal for blankets, rugs, runners, cushions, etc.
You can use a variegated/print/cake yarn and allow the yarn to change color on its own or you can use two separate colors to create a contrast in the pattern.
Dive into your stash for this lovely project.
There will be loads of ends, which are either made into a twisted fringe or you can finish off and enclose all the ends in an envelope border.