Now, people get rather confused when they are drawing socks on a foot. Sometimes, when one is wearing a sock for a long period of time, the tip will start to sag and look very similar to this. This is great to use for characters who are sloppy, just woke up from bed (still wearing socks), or never change their socks. This technique also applies to oversized socks which are too big for the foot. 1) where the foot is most active, there will be present wrinkles...all the time. 2) The toe of the sock/foot will always form the shape, generally the toe is the largest peak of a foot. 3) Like I stated previously, if someone is overusing a sock or if it is too big, the fabric will sag off through the tip.