You must have at least some progress being made on your mod prior to it being placed here. This can be concept art, mechanics, models, etc. I would also urge that the OP be kept updated with the latest information about the mod's status.
"Notice: The Moderation and Development team does not endorse any and all mods featured here, any comments by any Moderator/Admin on these mods are their own. View at your own discretion and please keep the pony mods down to a minimum."