It's a nice setting. But it's too flat. Most of the map isn't used, either- there's not enough cover to encourager either team to advance. Try making it easier for both teams to advance. Make a use for the side bits of the map, and try a different water texture. This one doesn't look quite right.
Also, the nav file is out of date. Delete it, build it again and it'll get rid of the message at the beginning of every round.
dont use youtube they're either people who cant talk... or 3klikphilip