A creative friend reminded me recently that a bucket is filled one drop at a time. A pattern is designed one change at a time. In working on the Philadelphia Sheppard Baby pattern, I am trying to get the head shape and size right. I am on my 5th head version (above is No. 3). With each version, I try to only make one change, so that I can revert to the previous version if I don't like how it looks.
One drop (one Seam?) at a time.