How did the covers evolve over the course of the 'Wolverine & Deadpool' comic series, and what did these changes signify?

Initially, the covers were highly dynamic and action-oriented, showcasing the characters in explosive confrontations. As the series progressed, the covers became more surreal and dreamlike, reflecting the increasingly unstable mental states of both characters. This shift signified a deepening exploration of their psychological complexities and the blurring of their perceptions of reality.