I like to under describe, it lets the reader develop their own picture. You just have to get whatever you need described (one eyed, gimp legged with parrot claws stuck in his left shoulder), what is important to the story, done early, so the reader doesn't have to change images half way through the read. (what do ya mean he had a bright red beard??) Whenever possible allow actions and dialogue to do the heavy lifting on your description. ( his good right eye followed the squawking parrots path as it drunkenly wobbled toward a perch on his shoulder). If you keep your descriptions minimal readers will develop characters they can empathize with both physically and emotionally
Of course that's just me and there are other schools of thought.
Mad Lews