Right now they are not looking like a poster and they are looking similar. PLEASE consider: space, sCaLE, contrast.. Don't hold back BUT don't do things just becuase they are "cool", always have a reason and it has to go back to the meaning, emotion, feeling... of the speech.
Try for a poster that gives the viewer information in layers, when they are 20 feet away they should see be able to read something, at 10 feet something else, and 1 foot away to be able to read the rest.
I will be around part of the weekend if you want me to take a look. The examples below are just examples not all super great but hopefully they will get you thinking. Try not to be overly influenced by them.









