As you already know a favicon - it's a picture of ICO, JPEG, PNG, BMP and GIF formats, which can have different sizes, ranging from 16 by 16 pixels and used to display in the browser's bookmarks and tabs. That is the easiest way to draw it in Photoshop or any icon creator like Faviconer.com.
You can do it even easier and take some ready-made image or a photo and just convert it to the required format and size at our online icon creator. Since the width and height are very small, then all the details will be seen badly. Therefore, it is best to make the icon looks as simple as possible, but at the same time, attractive and unique. After all, this is a business card of your web resource.
It does not matter if you are not a Photoshop guru. Faviconer is one of those free services, which will help you to create, edit or transform any picture to a small tiny icon. Some of icon creators can only convert images to the ICO format, while the others, in particular our site, give the option to edit or create new favicon from scratch.