Pull the front bumper completely. You need to look at the support that its bolted to.
It looks like the metal frame is mashed up. try putting that on, without the cover, then use jackstands and an old loop of seatbelt around the frame. you can then use this like a stirrup and push down on the frame inbetween the jackstands to make downward bends.
If you need to go up you can use wood and a jack and the weight of the car.
Once you've got the frame the right shape you can then try again with the cover.
Another tip is to use long straignt lumber and clamp the frame to it to straighten it. I usually use offcuts of and a whole long 2" x 4", and a big rubber hammer.
Hope this helps!
Rich