I am proud of my son. He could construct sentences now and create his own story. This one is inspired by the game: Plants VS Zombies:
One day, Dexter called AJ. Dexter was bitten by the centipede. He became a Zombie. He went to the houses and ate brains then everyone turned into zombies. Someone called the police to stop the Zombies but the zombies ate their brains too. Then the whole town has been transformed into a graveyard. The end.
Here is his actual version or write up. The one above is polished already by me. 
One day Dexter call AJ then Dexter has bite by a sentipig then his an zombie then go to houses and eat brains then everyone has turn into zombies then someone call police to stop the zombies then the zombies eat their brainz then the town has transformed into Grave yard. The end.
Nice story is it not? Besides his love for drawing, son is learning and hopefully will love to write too, just like his mom! 
