Here are tips to help you improve your website design.

Choose a simple design.
Less is more and clean flat designs are very popular.
Keep navigation simple.
Potential clients should be able to get to any age within two seconds.
Make your site mobile friendly.
The % of visits from mobile devices grew from 57% to 63%.The % of time on site from mobile devices grew from 40% to 49%.
Make it easy to get in touch.
Your contact information should be available on every page. The footer is a perfect place to provide contact information of every page. If it's difficult for people to find your contact information you're losing 95% of your potential leads.
Put testimonials on your website.
Customer testimonials are considered the most effective contents, identified by 89%.
Clear and actionable calls to action.
Don't use "click here". Use a call to action that encourages action such as "Shop Now", Buy Tickets Now", Download the Guide Now"
Using social media sharing buttons.
Prominent social sharing buttons can increase social media sharing by 700%.