Webcomics need characters. The reader is going to need someone to focus on and associate with when they read your work.
There’s a general assumption that we can tell a lot about a person by the way they look, so, in comics, we have to be aware of what impression we are intending to create.
There is a phenomenon whispered about in the corners of conventions; with furtive glances toward the unsuspecting subjects of the con-goer’s ire…
If you’re going to be drawing webcomics, one of the things you will almost inevitably have to do at some point is draw a person. Since we are surrounded by people (or images of people at the very least) every day, we have become very good at recognising when a drawing of a person does not look right. Learning to draw humans (or a passable facsimile of a human) is one of the entry-point skills you will need if you are going to be a success at making webcomics.