The Mariposa cardi is a made to measure and size inclusive design, this means you take your own measurements as directed in the pattern and then follow the instructions. This means it can be made for any size and age.
The pattern is an advanced beginner level that uses US terminology.
The pattern contains detailed steps, stitch graphs and photos throughout to help guide you.
You will need any type of 4ply (fingering weight) cotton yarn and a 3mm crochet hook. I used roughly 1100m for the size small. You can also use thicker yarn (sport/DK) if you prefer, with a bigger hook, however you will not meet gauge but that is not important as it’s a made to measure patten.