To give you a view of the interior walls, here is a WIP photo. There is a Three Broomsticks Tavern & Inn on the left side plus a little shop I named The Owlery. Honeydukes display window sits in the back and Mrs. Puddifoot’s is on the right side.
Thank you! Honestly, the hardest part is figuring out what little scene you want to set inside. It’s important to decorate all of the interior surfaces before assembling because nooks are relatively narrow inside. I made a bit of a tutorial, you can find it here