You should strive to sketch patterns which are either unheard of or present the exploits through an altogether different perspective. Utilize the space to bring his magic to the fore; something which has made you write a 1000-word essay on him.
You should conclude the essay with a contented feeling, as if it has been a time well-spent. You have to summarize the piece into a selection of qualities that frame him and would sustain him in living memory for a long time. You may also leave a scope for conflict so as to give the write-up an argumentative flair. The conclusion should be about 250 words.