Yeah, I found it helpful to build mine before I helped my daughter with hers. Her decorating is nearly complete. I'll post some pictures of it later. She did one based on one of her favorite books.
Since I last posted, I added a ball lock and the funeral chapel. The ball lock works moderately well. My main issue at the moment is that when I launch a ball, it hits a rubber band behind the ramp and comes back down the shooter lane. I'm going to try to make a flap out of some card stock to prevent that from happening.
Other than that, I think I may be done. I keep thinking it needs one thing more, but I'm not sure where, and I feel like I'm running out of space. This must by what real pinball designers feel. Making maximum use of space is harder than I thought.