There is an old saying among us Injuns: "You can't judge a man 'till you walk a mile in his shoes."
We as non-southern-Negro-children-of-sharecroppers cannot possibly walk a mile in Robert's shoes.
Find the things that you appreciate about his music, the roots of it emotionally speaking, and apply those feelings to something YOU care about and want to share. I am not saying that no one should do RJ covers or blues; I am just saying that you will find more fulfillment in expressing YOU rather than "note-for-noting" another man's songs.
"Love the blues, feel the blues, even embrace the blues, but make sure they're YOUR blues."
Peace on you,