this photo (Venus, 100 AD) depicts that near perfect proportionment we strive for in tying flies. The fly starts with a slender beginning and progresses upward toward the head getting slightly thicker. Now swimmers, clingers, crawlers and burrows have their different structure. However, for purposes of me constructing a self serving, clever piece around Venus’ perfect little bum, you have to humor me. Let’s use the swimmer mayfly structure to satisfy the above proportionment. If these proportional suggestions are followed then you will look upon your work with the same self satisfaction that Venus seems to enjoy…look at that bum.