So what are the most common mistakes people make?
1) Not using a photo at all. Being represented by the dreaded grey silhouette just looks like you are hiding or don’t care and makes it harder for people to remember you.
2) Using a pic you took on holiday, sitting at a bar or on the beach. You may look relaxed and friendly but if you are not a holiday rep then stick to a business setting.
3) Cropping a picture to cut out other people but leaving bits of them behind. Look out for parts of heads or a phantom hand on a shoulder.
4) Using a distant shot so you are tiny in the picture. It makes it impossible for someone to recognise you should you ever meet.
5) Uploading a rectangular shot when the requirement is square. Many sites will automatically squash the image to fit and you may end up with a peculiar shaped head.
6) Taking a quick shot that is badly lit or out of focus, meaning to replace it with a better one. How long ago did you put it there?
7) Taking a selfie holding your camera below your face - unless you want to emphasise all your chins!
Remember, people make instant judgements based on what you look like. Your profile photo is what prospective clients, employers, employees and possible associates will look at first when they are deciding whether or not to contact you. Make sure you look like the sort of person you would like to do business with.
A profile picture is part of your personal or business brand. A good photograph will help you project the image you want and look professional. People will recognise your posts and tweets quickly and know that they are connecting with the right person.
Here's my blog with my musings about photography and all things marketing.