oh.hi melony! its k.hopefully, sum1 will answer ...lol!
About help. u doing cie? neeed help with p3 or p5. There are the pastpapers, practical assessment section in the syllabuses, and the teaching AS/A2 Practical skills booklets for respective subjects. You can read through those. Aside from that, on the website
www.cambridgestudets.org.uk. They have some examiner tips.
Other than that, just keep your calm, I guess. VERY IMPORTANT
and get used to doing the basic stuff like manipulating apparatus,etc. Ooh, and the mark schemes and examiner reports help a lot.
I guess reading practical boooks might make u more comfortable with the subject too.
Hope we all pass with flying colors!