I'm wrapping up the interior on my car.

There are 2 brackets I have that I can't recall where their exact location was. I know they're somewhere at the lowest point of the inner wheelwell on the driver's side. Just behind but inside the door opening.

This one is what I'm really wanting to know where it goes. It has a plastic dip over it. There's another that is smaller.

Any pictures of these how they go would be appreciated.

That one should attach just in front of the gusset bracket under the window crank, just above the floor.
Hard to see in this picture.

The picture you have I believe is the side mount bracket for the rear seat if I'm correct?

I have that mounted already just as yours is in the picture.