Doesn't look bad at all, taken as a whole. A fairly conservative (and therefore plausible) design with a distinct look (yes, I'm talking about the island).
Besides the pertinent comments already made, and rather than nitpicking about minuscule details at that stage, I'd give you two pieces of advice, which you may or may not want to take depending on the amount of thought you want to sink into your design:
1) Draw a full-scale plan view. Doesn't need to be a quality drawing, but it is critical, particularly for an aircraft carrier, that you get at least a broad idea of what goes where and how much space it takes. In this case, you might even want to do separate deck plans, if only to get a good view of the space your hangar can take. I'm afraid that the mostly blank space on the aft upper hull in your side view doesn't quite mesh with your concept drawing, and this is an area where a plan view would help.
2) List all the visible systems on your ship (weapons, sensors, life rafts, intakes, what have you) and figure out what they are for. If you can't justify something, remove it. If your list is missing something important, it will help you figure it out. No need to be drastic about it (you can have enough radars, but you never have too many satcom links), but this kind of thinking process can take a ship from fanboy doodle to realistic design.
Regarding that last point, once again, this ship of yours looks the part already, so I guess you're already half-way there.
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