My bomber did start off life as the plane for the 2010 lego city airport set. It is a Bomber/Military transport plane and a stradotanker. SO it can do three things at once. The thing on top is a cannon (just in caase). If it was real it would be about 45m long the cockpit is pretty basic and so is the inside compartment. The name of this plane is called the white hawk 45 45 meaning its overall length.
Not bad as a start, but it could easily be improved. For example, I'd make some bomb bays, (You DID say it was a bomber.) Take of that obnoxious cannon and replace it with some sort of downward-facing guns, like on an AC-130. After that, I'd take off those awkward forward winglets and replace them with something smaller, and on the underside. Look up "Canard Plane" and you'll see what I mean. And, my least complaint is to improve the color scheme if you can. It's not all-important, however, and quite a few of my builds suffeer from multicolordness, but try to keep it dark. If possible, i only use light and dark bley, black, and white. But overall, not bad.