The speech flows as you invite people to your home, and walk them through it. So, the front door is like the greeting, welcoming guests into your home. The picture in the front room is the first point, the couch is the next point. the dining room table is the next point. etc.
practice the speech by looking at each item you select, and mapping it to the point.
It's pretty amazing.
Everyone knows what their living space is like, and hopefully it's a safe comfortable space. Anyone can talk for a long time without notes. The memory of home is emotionally calming. Inviting listeners in gives a warmth that's hard to explain.
I mean, rehearsing helps a lot too, but mapping talking points to objects in the home is an amazing trick.