Adding a hyphen to so + adjective

Hello guys,

I'd like to know if this sentence is correct or not (Focus on the hyphenated word)

".... Of your so-heavenly creation."

Another example:

"... Until my last breath is consumed by your presence so-divine."

Could you please tell me if they are both grammatically correct in their specific contexts?

I also have a side question about the usage of the word yet:

Is it correct to say the sentence below without using the comma or not?

"It drags me me to a place so calm and still yet so dark and petrifying."

It's important for something that I am writing right now, so, if you can help, then please do so!

Thank you very much.