This pattern is a made to measure and size inclusive design, this means you take your own measurements 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 and is written only in English.
The pattern contains detailed steps with photos along the way, there is also a stitch graph for the skirt pattern.
You will need any type of 6ply (sport) weight cotton yarn and a 3.5mm crochet hook. You can use thicker yarn if you prefer but make sure to go up a hook size.
I used roughly 1200m of sport weight yarn for the sample size (small -UK 8).