Bad PowerPoint design may be just as detrimental to your presentation as smelling like a horse. When you have poorly designed slides, a few things happen: your professionalism is questioned (because you essentially tell the people looking at your PowerPoint that you don't know how to create professional work); your audience members get distracted as they toggle between looking at your bad design and listen to what you're actually saying (and, in the end, they don't really ingest either); and your audience just gets bored or annoyed--which is about the worst possible outcome when presenting. Obviously, there are a number of…