It is very important in the art of crochet, crochet to the type and thickness of thread or yarn that is recommended. Thereby we ensure an almost perfect result. Otherwise they will vary thereof.
It is quite common for beginners crocheters make the mistake of using another yarn and another needle, and this will prove that the garment or accessory that is crocheted not remain with the same measures as those indicated.
It is therefore very important to respect the materials mentioned in the published designs. In this tip I must emphasize that even with respect to those materials, there is a possibility that found small differences, because what can not match is the tension applied by the weaver.