Iambic Pentameter Poem help

Hello. I am doing a portfolio for my poetry class, one being a formal Shakespearian Sonnet.
I am absolutely horrible at this, every time I think I am getting it, I am wrong. My accent/slang just ruins it for me. I believe may have done it backwards ('u), but at this point I am so lost. If anyone could look this over for me so I can revise it to attempt to fix it, it would be greatly appreciated.
(It's a little dark, so I hope you aren't offended)

He came home with tiny metal blessings
Shining in a barrel full of dead ends

“Vows are forever, and not for testing,
Together we will be in death to transcend.”

Fight or Flight took over her assessing,
With her heart versus the estranged husband

“God please, what are the odds of him missing?
Who will be there to tend to our children?”

Bullets fired, no need for a confession,
One left in the caliber with great intent
Love on his hands, he pointed to his aggression,
A last breath, then
“click”
to make him ascend.

Children were left to clean the blood stained mess,
With bodies of their parents to caress.

Thanks!