Nice job. I like the tower. Why don't you try using real rocks for line of site blockers? The egg carton rocks or pretty good, but nothing beats real rock to simulate rock
. I live out in the country so there are rocks all over. I look for ones with an intersesting shape and a flatter bottom, so it can stand on it's own. If you don't have any rocks nearby, take a drive out to a bush or whatever and go rock hunting.
thanks for sharing your stuff.