This is an overlay mosaic pattern worked in US terminology.
The pattern, Patchwork Heart, was released on February 1st, 2024.
This pattern contains 1 large, detailed panel that can be repeated to the desired size for a blanket, throw, cushion cover or runner.
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 colour on its own or you can use two separate colours to create a contrast in the pattern.