Paul I've been watching you having a play, and it's good fun aye?
Of course the biggest problem with a new toy is not to make the effect take over the core idea, right?
Take that screenshot again, from the sun side, and you'll get the right highlights.
If you really want the sun in your picture,
really, you can cut and paste the plane back in to your original picture, and mess with brightness/contrast only.
I reckon the best shots are the ones framed and lit naturally, with effects you wouldn't notice.
But you are inspirational: your blurry shopped pic the other day inspired this one, whcih blurs only the foreground but leaves the horizon crisp.

It's not quite there, but gives some feeling of motion. A-4 contrails are shopped too, to add to the movement.
I'll renounce all rights to it so if you want to improve it, do.