This is really, really embarrassing. And I know it's been a very long time since I accepted your request and so you're probably wondering where it is.
The night I got the request, I took a crack at. But... I just couldn't. I couldn't do it.
A few days ago, I tried again.
And just now, I attempted a third time. But I just can't.
And so now I'm going to do something that I've never, ever done. I'm giving up. I'm retroactively denying your request because I simply lack the skill to complete in a fashion that I'd feel comfortable releasing.
I'm so sorry. I'm very, very sorry. But I just can't.
I mean, believe me, I don't want to... But Arceus above is Rayquaza one of, if not the, worst Pokemon to have as a base. It is virtually unusable.
Forgive me, and feel free to request anything else from my shop. Or if you are so inclined to have this request, try my worker Shadow Lucario 50. He also does fusions and he may have better luck with the request.