Ouch
I'll not repeat t'others advice
Worst bit looks to be the left hand headlight surround
Having changed the slam panel on mine the only advice I can offer is this:
In the fourth pic from bottom there is a bracket that joins the the chassis leg to the bottom of the slam panel. If you drill the welds on this bracket so that the slam panel is free from it then you'll find it easier to get the bottom edge of the slam panel straight.
Pull the bracket forward, then use a block of wood as a drift and knock the headlight surround from behind (may need to unbolt the horns first) to bring the bottom edge back up to where it should be, then reweld the bracket to the panel
Hope that makes sense, easier to point than to type
Al