I hate to come across as a jerk, but... erm, I think that the main critique I have of your Zero is that it looks nothing like the real thing.
Here's a good link showing lots and lots and lots of drawings of the A6M:
http://www.combinedfleet.com/ijna/a6m.htm
Note, for example, that the propeller has THREE BLADES
At the bottom of that article, there are 3-view drawings- the most valuable things you can find, for reference sources. Model from those. In most modelers, you can even import them as a background image, and model with them as your background.