Oops, didn't notice that it was a 4v4 map. That makes it a bit more interesting. A bit unbalanced for the unlucky player whose base is on the first line of defence, but it would encourage better team work, though not a newbie map.
As for screenshots, there's technically a sticky thread in this category that details how they're done, but something seems to have changed in MG, as the listed method is no longer working. I had to use GAE to take the screenshots.