One of the beautiful things about making your own clothes is that you can play with the dimensions to get the fit you really want. I found that the small square made the top too big, so I used half my high hip measurements. I then measured across my shoulders and down each arm to my elbow and added 10" (for the cut off to create the arm openings). This resulted in a top that fits at my hips, rests just below mid hip and has sleeves that are long enough and do not bind under the arms.

I would not use my full hip measurement for the big square as I would end up with a shirt that was too loose across my chest...but I prefer a more fitted shirt. I highly recommend that you play with the measurements to get the fit you like.

I have made 5 of these tops using various fabrics from a madras plaid to a shimmer satin to a light weight knit. All of them fit nicely and each has its own personality...I even made a sundress using the square construction, perfect for the beach of pool.

KayN - I don't know if this appropriate to post here or not, but KwikSew has polo shirt patterns. #3059 is the misses sized pattern. They have them for men and children too.