Submitting Pokémon is fairly easy.
You simply need to just go over to a Gen /vp/ thread on 4chan, and reply with the design of your 'mon. Or, you could add it to the doc directly, which is here: http://goo.gl/ae85qV
Designs that are uninspired (aka JUST a jew or JUST a black guy) won't be added. Neither will dicks, vaginas or shit. If your design is not one of these things, it basically has a 95% chance of being added. Since we have reached a full dex of 151 Fakemon, all designs submitted now will be reserved for Postgame/DLC.