I definitely like these concepts! Although I am not a fan of the number font on the Commanders' burgundy and black jerseys, I think the burgundy design is pretty solid. The striping probably is my favorite for Washington. For both teams, I probably would narrow it back to two helmets? Having all the colors is cool, but two seems less unwieldy. I am intrigued by the Falcons using gray - there isn't enough of it.
Is there a particular site or software you're using to put your designs together?