First of all, you should always add lighting and cubemaps before posting screenshots, to avoid ugly fullbright images. You should also post a screenshot of an overhead layout of the whole map, since we can't really tell what the layout is like from these images.
As far as the layout goes, it is WAY too flat and open. It's extremely important for a map (particularly a CP map) to have height variation and distinct routes to and from objectives. I can't say for sure this is what you did, but it looks like you started out with a big, open area and plopped down a bunch of square buildings in it. The areas where the CPs are should be "focal points" of the map, not just left in the middle of an open field. Also, open fields don't work. If you're going to have a large open area there needs to be varying height, obstacles to break up the giant flat expanses, flanking routes to allow players of close range classes to avoid large open areas (or at least partially bypass them), or some combination of the three.