I'd start by simplifying things down a little bit. You do not need to jump to hit a fairly good serve and you're clearly having trouble finding the proper timing to use that jump as part of your service motion as opposed to just jumping. See how hard Djokovic can hit during practice while he barely hops:
The next thing I would do is make sure I have a little more time to swing. You're going to have a little more time once you stop exaggerating that jump. If you can't quite hit that trophy position just right yet, I'd consider tossing slightly higher.
Now that this is out of the way, take a look at Djokovic again. You don't have to bring the racket up the same way he does, but you do have to make sure the hitting side of your string bed doesn't point at the sky before you start swinging. And he does briefly hit that 90ish elbow bent, racket tip to the sky, tossing arm up kind of posture we call the trophy position before he hits. The idea here is that you're preparing to throw your hand up, so you align your shoulders to point up.
Another tip would be for tossing. You seem to be bending your arm which can lead to a whole host of problem (and you can't hit a proper serve if the ball is in the wrong spot). Here's a few things that can help:
1. I always start with my arm straight and my upper arm touching my rib cage. That way, you always start in exactly the same position and you're not tempted to player with your elbow;
2. You should start low and gradually accelerate your arm up to toss at the proper height. No jerking suddenly up here!
If all fails, you can also try to play it like Roddick, Nadal and Monfils with an abbreviated motion. The key point, though, is you need to hit that trophy position before you swing. And, yes, trying to hit the ball with the edge of your racket is a good mental picture for what you're trying to do. I also find that hitting overheads helps figuring out where the ball needs to be and when you should swing. Just make sure you do have the right posture when hitting overheads too. (And you can practice those alone by smacking a ball down hard with your racket so you get a very high bounce you can chase).