The first 3 can easily be accomplished by working with a method designed to target strength, dexterity and coordination. Jody Fisher's 30 Day Guitar Workout is something I have used to good result for years myself and with students.
In terms of your own voice or style, that is a bit trickier, and takes a while. Often what happens, is people emulate one or more of their favorites, and wind up melding bits from more than one source. Our own personalities, and technical idiosyncracies tend to spice up the mix also. Spend some time learning the material of one of you favorite players.
An example might be Mimi Fox. She started out as a star student of Joe Pass, but evolved into her own thing after a while. Good luck |