Clep official study guide and Peterson scores.... what does it all mean?

[rational]

Trying to determine what these scores indicate about my readiness for Psych Clep.... Clep guide I had 44 out of 79 correct, and the Peterson test I scored a 58............ Am really sensing that this might be cutting it close and so am going to spend more time on the flashcards, but was hoping that I could gather some general thoughts about these practice tests; incidentally I did not sense that I gleaned much in this regards from the specific feedback area, so thoughts would be appreciated.