-A silver dress (since Daleks come in so many colors, you can get pretty much any dress you want. I got a silver one. I could not even attempt to make my own dress, I know, I cheated).
-32 or so plastic Easter eggs.
-Spray paint that sticks to plastic.
-Somewhere to spray paint things (I used my old creepy basement).
-One giant quilting pin.
-Needle and thread.
-Black leggings (optional).
Step 1: Make sure your dress is straight.
Step 2: Poke holes in your easter eggs.
Use that giant quilting pin I told you about earlier and poke two holes on opposite sides of the easter eggs.
Oh yeah, I put duct tape on the undersides of the semi-spheres because they came with holes in them, which annoyed the crap out of me. Anyway, the duct tape didn't help/hinder anything so pay no attention to that.
Step 3: Spray paint
Also, spray paint the plunger handle silver, make sure not to paint the black part. My plunger unscrewed from the handle so it was easy, though I'm sure you could cover the plunger part with plastic and tape and that would work.
Step 4: Sew the Easter eggs onto the dress.
Step 5: The felt
I have yet to make the headpiece. I intended to use tiny dixie cups, blue acrylic paint, and blue yarn to attach the cups to the headband. And there you have it, your plot to exterminate all humans is that much closer to becoming reality.