IMAGE
Apart from the fact that an image is processed 60,000 times faster than words by a human brain, a great image sets up the tone of a page while a bad image can undermine everything else.
Do not use studio-like fake stock images. Everybody knows that’s not you. Try to use real images (if possible); if not, use a believable looking stock photo or just keep it plain if you can’t find one.
Characteristics of a good image