They do look nice, even if I’m not a huge fan of some of those posters.
One thing I will say - be careful bringing the blacks down too much like that. It looks nicer on a screen, where you can get the blacks nice and inky without crushing too much detail out, but that can tend to look … not as good when printed, in my experience. (I’m mainly speaking to your OT/ST covers and the textless TPM one, AOTC and ROTS and the rest look good.)
Of course, I haven’t printed yours, so you may have found the right balance and I’m just being overly cautious! (I’m also sure certain printers and/or printer paper will have better luck with deeper black levels than others.)