The pattern is written in us terms
Watch this tutorial by the amazing sewrella to get straight edges
The scarf is made first then the pockets is made and joined to the scarf with a crochet edge seam
Chain one is not considered as the first stitch throughout this pattern
If you are a shorter person you can decrease the number of rows. So instead of working for each color for 100 cm. Make it and where between 90 and 80cm