First of all, there are many styles of hand-crocheted thin sweaters, and there are many colors and yarns to choose from. Generally speaking, thin sweaters crocheted by hand are round neck, because round neck is easier to knit. Of course, some people with a round figure can also choose crochet V-neck, because V-neck is thinner than round neck.
Secondly, different hand-cut thin sweater styles need different hook methods and different wool materials. Generally speaking, mohair or other fine wool will be chosen, because the hollow sweater woven with thin thread looks better and will not be particularly abrupt; If you use thick thread, you can only knit some sweaters with simple hooks. Too complicated hooks usually make sweaters thicker.
In a word, there are many styles of hand-woven thin sweaters. You can knit as you like according to your favorite colors and styles, and you don't have to be too restrained, because hand-woven requires imagination. The more imaginative and bold you are, the more beautiful the finished product will be.