You don’t need real clients before you can start making “pro level” websites. Just start now and start practicing.
Imagine a hypothetical client/business (say, a lawyer’s office, a small electronics shop, a small realtor office, etc)… now design a website/look for it, using photoshop or some other UI program… and based on that “approved design”, try to code the necessary HTML/CSS code to create that look/finished product.
Once you have an actual working html/css code, then you can push it further by adding some meat and bones to it. Populate the page content from a database. Populate the photos from a database. Add online forms to search the database. Add google mapping, etc.
Maybe this post will give you an idea