Try to restrain yourself from using sexual imagery and Nazi swastikas, for a start… These are a couple of the “common logo mistakes” covered in this Web page. It’s unbelievable that the clients didn’t see the problems before they slapped these logos all over their stores and stationery.

These are all real logos of real outfits. Unfortunately. But hilariously.

These examples show why you ought to hire a logo designer with a brain. I know several. Just ask for a recommendation before you have a train-wreck of a logo.