I only had a few minutes in the morning while walking from the car to the office to do the next assignment from Langford's book: shoot some images for a square frame. The close-up shots wound up out of focus - I should've paid more attention to what was going on when taking those shots. At any rate, here are the attempts. Original image followed by the square crop.
Another side of the engineering building:
(the off-center crop wound up being better here)
Trees in front of the Engineering building
(the crop removes the overexposure of the sky in the top left corner, while keeping all the trees)
Flower attempt #1
(Picasa offered some fun smallish crops, but the rule of the game was to have a full-size square crop)
Flower attempt #2
I don't really have a good excuse for the lack of focus.