Removing front speakers was for me a royal pain in the neck.
Here is something that might help you avert unnecessary headaches:
1. Before you remove any screws take out the (front, of course) turn signal modules.
2. Prepare a wad of J-B-KWIK
3. Spread the wad over the clips and brass brackets, securing them to the back side of speaker well.
There are four brackets per speaker that the speaker covers screw onto:

And two brass brackets (upper and lower) per speaker that they screw onto.

You can see it looks kind of messy, but it keeps these from falling off when you take the screws out.
4. Wait for the mix to dry and then remove the covers and speakers without worrying about hunting for fallen pieces.
Why?
Because otherwise more than one clip or bracket will fall off and you know what will happen then . . . good luck finding and reattaching them.