Do not put photos of your children or you with your children
Do not show landscape
Do not show someone else.
Do not publish a flag.
Do not fail to show a photo. Do not show a part of your body while excluding your face.
Do not show a cartoon.
What sort of person would be attracted by any of the above?
Show yourself. This means your individuality. You should be well dressed. Elegant – maybe even tempting if you are a woman. A man cannot exactly dress temptingly. Men who show themselves without shirts etc… tend to put most women off. Smile. It really is smile. But whoa their tiger! Not risus sardonicus. It should be genuine or at least seem it. A decently lit photo with a good background. This need not be studio standard. Just something passable. It only takes a little thought. You are selling yourself.