The best thing you can do is keep the glove, when not in use, in the packaging in which they came. Lay the glove as smoothly and flat as possible and slide it back down in the packaging.
Also, depending on how you grip the club can be a HUGE factor in determining the lifespan of a glove. With the PTL being such a nice, smooth, supple, and thin leather; the longevity won't be as much as say a GTXtreme but should last you multiple rounds/practice sessions.
Again, outside of placing back in the package, there is no one perfect answer to increased longevity of the glove. Good purchase!!