Complex sentence: Trying to avoid getting his face taken in pictures, Sherlock disguised it with a deerstalker; unfortunately, this become his trademark, much to his annoyance as he greatly dislikes the hat (even being given one by New Scotland Yard as a gift).
Split into simpler sentences: Trying to avoid getting his face taken in pictures, Sherlock disguised it with a deerstalker. Unfortunately, this become his trademark, much to his annoyance as he greatly dislikes the hat (even being given one by New Scotland Yard as a gift).