I make all my wine from juice buckets. My question is about how the wine changes after it is opened. I age in carboys for 12 months before bottling. I have noticed how my wine is better the second day after the bottle is opened. The difference is considerable. It is softer, smoother, and certainly more like a bought wine. What is causing this and what can be done to have the wine taste like that from the first sip? Or is that just part of home wine making?