Hmmmmm.... interesting question Aoife. Not sure what aspects it is you want to explore from that period of your life, but the thought occurs to me that you could do 3 columns of cards. Each column could represent a year, with the cards in each colum representing those aspects you want to explore. For instance, if you wanted to look at "mind-body-spirit"... you could do a 9-card square similar to the one in my recent thread (hmmm... wonder why I thought of this?
);
..........Yr-1...Yr-2...Yr-3
mind....1........4.......7
body....2........5.......8
spirit....3........6.......9
Card 1 would be the development of your thoughts through that first year. Card 2, your health & physical development during your first year. And so forth.... Of course you would substitute whatever other aspects you were exploring for the mind-body-spirit rows, and you could add additional rows as needed if you had more than 3 things you were exploring.
However... if you were thinking more along the lines of something going on between you and your siblings or parents, a relationship type spread might work.
Hopefully these ramblings of mine have been of some use...