That's a very nice paint job. Love the drybrushed silver paint.
Please don't take this the wrong way, but for some reason he reminds me more of Swoop than G1 Starscream. It's probably all that silver and gold. That gold "appendage" on his groin looks more like a beak than a canopy. This, of course, is the fault of the design itself, and there isn't much you can do about it.
Maybe if you added some blue and red stripes on his wings, it'll look more like Starscream. Just a suggestion.
Either way, that's an awesome repaint in terms of skill.