Is it possible with the realworld icon editor tool suite to create a classic business man icon. If yes, where can I find more resources on this. (e.g. like the icons on this page http://www.iconexperience.com)
in general, yes, but you need a bit of practice. I have added an icon to the professions icon set, which now also contains a 3D model of human torso that can be used to create similar icons.