Ok, going from bow towards aft - and these are just things I could notice at a first glance.
-radar mast and space around it looks bit cramped with just too much radars going on each others way;
-that SPY radar doesn't seem to make too much sense since - usually there are 4 such antennas to give 360 deg. coverage - You'll have only two.
-VLS launchers - those in the centre of the ship will take away engine space (btw. - what kind of propulsion does it have?) - those on both sides on the bridge... well, either this ship is VERY wide or it has VERY narrow bridge.
-probably (perhaps it could be ok) 3 AN/SPG radars are too much - two would be ok (either only those two above hangar or one forward one aft) (some larger US warships had four of these, but I believe these were double-ended air defence cruisers, if I recollect correctly).
-these aft 127mm guns (on both sides of helicopter pad) - one thing is that they are outdated, secondly again it's either a very wide ship or a very narrow helicopter pad, and if You think that You could place these guns just next to the edge of the deck... well - You can't. There are lots of belowdeck parts to be placed underneath - both in depth and in width;
-and that RHIB next to a gun muzzle... it looks just weird.