Tips ko are practice, practice and practice!
Cambridge 8 yung ginamit ko, I googled it lang. For listening and reading, kariren lang ang reviewer. Basta accustomed ka na sa style ng tests, game on na!
For writing, google ka lang ng topics and learn about writing good essays. Ang strategy ko for Test 2 is to have 5 paragraphs, Intro, Closing and 3 paragraphs in between for my thoughts. 1 major thought per paragraph. And use the pencil!
For speaking naman, talk to yourself more. Hahaha! Or force people to talk to you in English. I googled sample questions, printed them and gave them to my sister and forced her to ask me. I was careful not to read the questions para makatotohanan ang practice. On the day mismo, important ang confidence - be relaxed. Don't turn it into an interview. Imagine talking to a friend lang and you should be fine. =)