Tesco and Amazon don't sell online, but you need to, your site needs to be a carefully constructed sales pitch.

 

Example

 

Below on the right hand side you will see icons that look like this

as opposed to On the right hand side below, with the above, your customers will glance below and go right, exactly where the icon is, with the other they will look right and naturally follow down diagonally to the left searching for the next cue, you need to tell them where they will go after the next natural step.