I eat them both fresh and aged. I try to age older deer or bucks taken close to or during the rut. Aging is a process that permits the meat to begin to break down, changing the texture and taste. It is time and weather dependent. If you can maintain 32 - 36 degrees, a month isn't too long. Warmer temps require less time. Hanging in an unheated building, in the shade with good air flow, 20 degree nights and 50 degree days could let a deer age for 3 weeks - jsut watch it very carefully. I prefer to age them skinned, though you do lose some meat to drying out.
It seems if there's good air flow they keep better. Wrapping in a game bag, old pillow case or bed sheet helps.
The color and texture of the meat, as well as the flavor, will change as the meat ages.
Try smaller pieces - a loin or ham, and see what happens.
A good young fawn or yearling gains little from aging.