12. Did you optimize for mobile?

Optimizing all parts of your store for mobile users is key.

You need to make sure that your header is clear to mobile users just like to desktop users, and isn’t clunky.

The menu hamburger should be on the left, while the cart should appear on the right side of the header (menu). Any additional elements like search and login icon should appear left to the cart icon.

Another good example:

Your header is the primary navigation for your site.

If it has too much or too little information, it will confuse users and make them leave instead of guiding them through your funnel.

That's why you need to concentrate your design work on header optimization.