Have you ever thought you finished a page, came back to it later and realized it wasn't quite done? I do this all the time. When I am finished with a layout I usually leave it on my scrap table for a day or two. When I come back to it I usually can tell if I am happy with it or if it needs a few more touches. This happened when I was working on last month's pages.
Two days later, I went back added some more flair. I think walking away and returning with a fresh set of eyes definitely helped.
Wonder how I got that type on the page without a 12x12 printer? Take your 12x12 cardstock and trim to 8.5x12. Most printers will print a custom size and you can set up a 8.5x12 page in the properties. Just adhere the printed piece to a full size page and it looks like you printed on your 12x12.