There isn't a thing wrong with your Wooly Worm. Good work! That fly will catch fishermen...which are one hell of a lot more critical than fish. I think it's important to remember that when a flyfisherman says he used to catch a lot of fish on a fly it only means he got interested in tying other patterns...not that the fly stopped producing. The Wooly Worm is a timeless classic that will consistently catch fish. Finally, there is no 'perfect' on a pattern...like beer, it's a matter of taste. Flytying ain't the Westminster Dog Show, though some folks would like to pretend otherwise.