07-07-2014, 09:16 PM
What you would need for the icon/preview would be a decent render of the whole model. If you don't have the ability to do so, don't worry -- you could always submit the model as-is without 'em. It might take a bit longer to be accepted since one of the other staff members (like myself) would have to make the previews for it, but it's still something that could be done.