You asked for advice, so here goes...
Not bad, Vavoom, but I think your picture is lacking an important aspect of a good pic: balance.
The plane is right in the centre of the pic, wich isn't too bad, but you can get a more interesting pic to look at if you place the main subject just a little off centre. (Don't let it touch the edges though!)
Second, the dark scenery in the background is confusing and puts the pic out of balance. What I mean is this: When I look at the pic my eye first focusses on the plane. I look at the red line on the fuselage, the flaps, the cockpit the tail section... But then my eye gets drawn to the scenery, beacause of it's great contrast to the sky. My eye has difficulty finding it's way back to the main subject (jet) because there is no path for it to follow. It somewhat jumps back an forth from the plane to the scenery, which is very uncomfortable.
To give your pic more balance you should give the eye some paths to travel along, so it can easily view the whole picture. You could add some cloud layers or vapor trails in the background for example.
The rest in the pic is actually very well done. The jaggies aren't that bad and the flaps don't look out of place to me. I like the time effect you created here.
I hope this helps you improve the pic. Keep it up!