Anakin Skywalker's Eta-2 Actis-class interceptor was flown by him during the last part of the Clone Wars.
... Wookieepedia article
The first change I made was that I redesigned the back where the dish attaches to the cockpit so that there wasn't any unnecessary pressure between the parts.
Similarly, I made changes to the front.
In my opinion, the most significant improvement made is that I used clips rather than hinges to attach the wings. This makes the angle better and allows the landing gear to work to its fullest potential (it also fixes the fact that LEGO hasn't made the hinges needed in dark bluish gray).
Other changes were a fixed chair in the cockpit by securing the neck brackets with headlight bricks, redesigned weapons, and more detailed wings.