The logo should not feature any animals, as the focus is on sustainability and not wildlife conservation. The design should not be overly complex or intricate, as it may be difficult to reproduce at smaller sizes. The color scheme should not include any bright or garish colors, as this could clash with the environmental theme. The lighting should not be too dramatic or moody, as this could detract from the positive message of sustainability. The artist should not be known for controversial or divisive work, as this could alienate potential users of the website.