You need to first make it public, add a description and a image to it. It has to work in Minecraft (you can use schematics, texture packs, events). The "Super Cool Op Items" is a good example of that.
The user submitted the mod to the forum because he needed help with some things. We helped him fix the bugs and it was featured in our Live Twitch Stream.
After that it has to go through other people of the crew, and they decide which mods to curate.
I do remember you have a mod called "minigame_" that one is pretty cool, we might show it off next week