You can certainly hem the silk yourself. This may be machine hemmed or by hand. You can even roll the edge if you wish. But it is so much easier to purchase a scarf piece cut to size and with a rolled edge already completed. It is not that much more expensive and it will certainly save you a ton of time (and if you sew like me, a ton of heartache and disappointment!) Traditionally, it is considered to be more valuable and ‘classy’ to have rolled edges on silk scarves.