So, "showing off", is what you are saying here?
If that's how you want to put it.
Nope. That's how YOU put it:
Or how incredibly extravagant a display to show His power and grandeur to those He made in His likeness.
Not my choice of words: yours. Except now - realising how boastful you made your god sound - you change it to this:
I see it more of Him expressing His creativity
BIG difference between what you originally said, and what you now want to change it to. Compare:incredibly extravagant a display to show His power and grandeur
expressing His creativity
Not the same thing at all. If you meant to say the second, fine. No probs at all with anyone displaying their creativity (scorpions! Ebola! most creative!), but please don't blame me if your original choice of words was so wide of the mark of the sentiment you wished to express.