Having made a portfolio the FedEx kinkos way, here is what I would do if I had to do it again:
1. Borrow a nice camera from a friend and take great photos of each piece. If one doesn't do it justice include two.
2. Upload to the computer, crop/fix as necessary.
3. Layout on a photo book site like shutterfly. Typically you will do 1 piece per page, but you can group related pieces together. Online sites often have deals so it shouldn't be too expensive and then you don't have to think about paper type or worry about formatting it correctly to print at FedEx.
As for as what to write, you will want a cover page, ex, "ceramics portfolio" or "OT application portfolio" with your name. With each piece include a name, date of completion, medium, (group or individual effort if applicable), if it was personal or academic work (if applicable). If everything is from a college class, you can have a paragraph at the beginning briefly explaining that. You can organize it any way that flows, by style/kind, or even chronologically.
I'm not sure how fancy of a portfolio you wanted but this way they come out clean and professional, and are relatively cheap and easy to make. Good luck!