I like the bottommost one.
It has good composition and its bright right where its supposed to be.
As for the others, the text is too stretched out and the composition is not good. it doesnt look good to the eye. You are not using the two-thirds rule.
Great effort though. Keep practicing and you will become really good in no time.
PS: The "OBEY" image should be stretched to the side a bit more.
Also, lower the opacity on the sunburst on the first image with the pig.