Need help with ideas to finish/better story in progress

I am having trouble coming up with ideas to extend my story...going through writers block right now :/ anyways here is what I have so far

Sullen breaths of relief resonate in the quiet of the cold room,
Each one injects release of the abhorrent evil in my heart.
Carbon and smoke surge out the gun barrel staining the air
Intertwine the smell of gore to an ardent bouquet of death.
The sonic boom of the bullet deafened by the crack of your skull.
Explosions of bone fragments are beautifully thrown about
Painting glory shown in the misty red colors of murder.
The artist manifested beckons the devil, the angel of my demons
That will hold my hand at the time of my darkest hour.