I am surprised this turned out as well as it did. I did it on a Sunday afternoon at the kitchen table whilst my children were scribbling furiously with pencils and crayons all around me. Despite the table being bumped continually, the picture came out okay. 

Originally Sefar and the Kheperans had tentacles at the base of their heads and their mouths lay under a grotesque collection of tendrils covering the bottom of their faces. Then Pirates of the Caribbean - Dead Man's Chest came out and the promo trailer revealed a bunch of similar-looking individuals. My heart sank when I saw the antagonist (Davy Jones?) - he looked exactly as I had envisioned Sefar. I thought about keeping the design, but it seemed too derivative. I wanted something to make him stand out and the look had to be something that would instill fear into the hearts of others (which is important in terms of irony as there are times in the story where Sefar is not as brave as his physique would imply). This picture experimenting with the horn sold me on the idea and since drawing it I have written the design into the narrative. It now seems like such an essential aspect to the Kheperans that I am quite pleased that Pirates of the Caribbean - Dead Man's Chest made me change my mind. Now if the next Pirates film has someone in it with a big horn on his head, I will scream.