Do you want to make the same vest as in the photo? It is very simple, it is necessary knitting fabric, further on a pattern. Look?
The dimensions specified in the pattern are indicative, they can and should be changed in accordance with the features of the figure and preferences, for example, you can increase the length. The distance between the armholes equals the width of the back (SHS). The overall width should not be less than SHSK3, but this parameter must be clarified, especially if you have a large chest.
Knitwear should be chosen sufficiently elastic. You can use scarves and pashmina, remaining from past seasons or just tie the cloth on the spokes or crochet.