So when it comes to ads, the key message should be large, bold and at the top of the page. Always start with a major message on top and then least important information on bottom and more least information at the last bottom. Marketing services emphasize certain statements using larger fonts and pictures. When people read from left to right, they usually begin in the upper left corner of a page, and will read most of the page that way. This is how people tend to read, they start from upper left and read it till bottom.