Year 1's Enter Into the Great Hall for the Sorting Ceremony

This is a scene from one of my favorite series and the book - Harry Potter and the Philosopher's Stone.  The scene is where Harry, Ron and Hermione enter the Great Hall for the first time.  Harry doesn't know about the Sorting Hat ceremony and is scared that he will be placed in Slytherin.  Professor Snape, Flitwick, Dumbledore, McGonagall and Hagrid are the teachers.  The children are sitting at their house tables.  I have built the Great Hall and joined up many grey bases for the floor.