Sometimes I write a short letter to the person in the photo. It's a great way of linking the photo to your heartfelt response to it. For example: I wrote a letter to my baby grandson telling him about the day in the photo and all the fun we shared. Thanks, Donna (bonprof).
Yes, you could do "firsts", but you can put any journal entry into letter form; it justs makes it more persoanl.Example: "Dear Ellen, look at your smile. This was the day we took Connor to the park. It was wonderful being with you as we watched Connor laugh and play. I think you are a wonderul mother". I promised my daughter I wouldn't post photos of her son (her request), so I don't have a layout to go with my example, but you get the idea?