Until they are voted for, the designs are in numerical order. The lowest numbers are the oldest designs and they are on the last pages. Largest numbers are the newest designs and are on the first pages. When I'm looking for a design, I look for the number. You can skip through multiple pages at a time until you get close to the number you're looking for, then go page by page. Of course if it's been voted for, it moves up according to how many votes it has. Hope this helps.
Also, if things behind it have been voted for, that can move it further back.