Exactly. And when you get it right, you not only engage the viewer with an exact moment caught and framed, you get them intrigued in such a way that they imagine what may have occurred leading up to the moment, or wondering what happened afterwards. To achieve this, details matter, big and small. So inject some personal experience into the diorama. If you have figures such as a tank crew with their vehicle, give them small details showing character or traits of who they may be outside of being a "tanker". A small state flag pin or patch integrated into their uniform or personal equipment. A cowboy hat hanging in a personal space, sports team hat or logo, a magazine or pictures/poster.

Anything that reveals some personality about the life they came from before being thrust into the situation they are in now. We all have a lot of life experiences and inspiration to draw from, we don't always have to look outwardly to find examples of what we want to emote, some of the best "art" we express comes from within us and our experiences, thoughts, and feelings.