Natural Conditions
Well, it is going to take a heck of a lot of effort to get mother nature to stop blowing wind against your cast while you are fishing. But if the wind is in your favour, then good for you. We’ll not dwell too much on things that we cannot control.
Needless to say, if the above are a little off because of reasons that are not in your control, and sometimes even if they are, the choice may not be the best (example, the flies that you need to use vs. the natural conditions), or maybe the line that you need to you for the place where you are fishing; fine tuning still helps with your cast.