Nice work
Although as MaNGusT said, the real challenge lies in making a complete model, with UV maps, textures, optimised use of geometry and, once we get more advanced, normal and specular mapping.
As for accepting it into the game, you must understand one thing:
The original game will be preserved as it is. Anything new will be implemented as mods.
Art revolution mod has the specific objective of recreating the original graphics in higher definition, with some artistical freedoms taken to fill in the gaps.
So rather than trying to get accepted into someone else's project, you can easily make your own mod.
Making your own mod will never mean that you will be isolated from other people.
Since we are using open source licenses, everyone's mods can be picked apart and remixed. People are making new campaigns, new weapon balancing, new units etc. You can make you own mod with all your favourite units and if you make nice art, other people might be interested in using your stuff in their mods.