Thanks for all the replies.
I realized a long time ago I would never be able to paint figures as good as the figure guys or build and weather vehicles as well as the guys who just did that. I did realize I could build and paint vehicles and figures well enough to suit me and make decent dioramas.
Dioramas are all about composition. It is like writing a story in plastic. Someone who knows nothing about your diorama should be able to look at it and understand exactly what is going on.
That said, for your first diorama ask yourself "who, what, where, when and why." For the blog I am going to use a Sherman and some US infantry. The diorama will be set in spring of 1945. Where is going to be "somewhere across the German border." The "why," the story, I will come up with as I go along. So there are all five questions answered.
I will try to post composition pictures ASAP.
**Pitfalls in diorama building:
I have only seen about three dioramas with more than two vehicles that did not look like a parking lot.
Smaller is way better. If you are building your first diorama and it is bigger the 12x12 inches rethink it. The dioramas I am most proud of have 1 vehicle and about five figures.
I will post the pitfalls as we go along too.