Prophets appeared in movies like Prophet Moses appeared in 'Prince of Egypt' if you have seen it before. Prophets' faces can be showed in child's books, some of books aren't. For example, Prophets' faces are covered. As long as I shouldn't be sure what they look like.
A movie called BILAL: A New Breed of Hero. Bilal was still there during the Prophet Muhammed's time. I've been always wanting to draw stories about Prophets. I'm not sure I will draw Prophets or cover their faces. Is it ok I can draw their fellows like Prophet Moses' mother and siblings, Bilal, their fellows except Prophets?