What kind of site. give more detail than we give advise but here are some tricks for improve site :
you can improve your website? please you can follow these steps
1) Use White Space
2) Page Speed
3) Use Attractive Calls to Action
4) Use Hyperlink Differentiation
5) Use Bullets, Bullets, Bullets
6) Use Images
7) Include Well-Designed and Written Headings
8) Keep Your Website Consistent
9) Catch Your 404s
10) Be Responsive & Mobile-Friendly