I Want A Submarine

I wrote a story for my boys, about my boys as warrior brothers who have to save the princess, Astrid, from the dragon. I am now working on the illustrations for it. Originally the boys were going to ride horses, but then I had the idea to put Bram on a giraffe because he is obsessed with them. I asked Anders what animal he wanted to ride. He said, "I think a hippo. It walks like this (as he mimicked it walking). It walks slow and can go in water. It can go underwater like a submarine. I want a submarine." I reminded him it needed to be an animal. He reaffirmed, "I want a hippo. Then I we get to water, I can go in the water." Here is the picture. Nothing says warrior more than a hippo and giraffe.