Simple bases and simple bases with groundwork are allowable now. So now the AFV's you connected to a base with a bit of groundwork are allowable.
There is a bit of time left - check out these threads especially the rules one - Rule 1 and 2
Quoted Text
1. The model should be a recent one that you have completed in the past few months. This rule is based on an honor system and we hope everyone will comply with it. More than one entry per user is permitted provided the models completed comply with this criteria.
2. The photo should be of a single afv-related model, simple display bases or bases with groundwork are allowed. No dioramas please. Bases with structures, multiple vehicles, or figures other than the vehicle crew are considered dioramas.
Threads
DMOM Thread
Full Rules