Williams Aztec Pinball Game

I just purchased a Williams Aztec Pinball Game and the game is in generally good working condition. My question is the painting and graphics on the wooden cabinet are aged and wood is in need of refinishing. Is there a possibility of refinishing and restoring the cabinet with the original paint and graphics by myself or should this be done by a professional. Are templates available for the graphics or would I have to make my own. Would this also detract from value of the machine? What do you recommend?