Creating a professional website from an existing site with existing content on Weebly

I currently have a Weebly account with a website that has been running for several years. I would like to really upgrade the user-friendly capability of this site and also make it more appealing. The site is mainly for clothing with drop down menus of clothing by age and male/female categories. I would like to make this overall more appealing and also add captions to the photos. This should be not a difficult job, but I do not have the eye for making this look good.