You get Avatar Awards by playing games with your avatar like 1 v 100.
Its simple, You dont get avatar awards.
There are no avatar awards, but you can buy avatar accessories.
There for your avatar to make your avatar look good and cool.
No you can't get avatar awards in Halo Wars. The only halo game that I know of that you can get avatar awards in is Halo Reach. You might be able to get avatar awards in Halo Anniversary but I don't own it so I don't know.
No. But you can buy avatar outfits from the avatar marketplace
Avatar won 3 Oscars.
Yes
There are not any avatar awards for Halo 3.
Achievements and avatar awards.
They are under the customize avatar option. Press A on your Avatar in the dashboard, go to customize avatar, then go to awards. They are only available to the gamer-tag that unlocked them.
Halo 3 itself does not contain Avatar Awards, but you can download the free "game" Halo Waypoint off of the Xbox LIVE Marketplace. This "game" will count up your achievements and depending on which ones you've unlocked, it will give you Halo themed Avatar Awards.
By playing games.