hmmm...i simply took an unseen recent pastpaper and solved it with strict time limits in exam conditions...like if only 1h 20min are allowed for the exam....i will try solving it in 1h and then check it from the marking scheme...i will highlight areas in which i appear to be weak and try concentrating on them...i will then solve the same pastpaper again in 1h and check it again...as i check, i give myself marks....i will then solve the paper again until i get 100% in that paper....i also download the written alternative to practical paper specification for intenational centres from the official Edexcel website....u can find it there once u search for it....and then look into it what we have to know for the paper...try solving each and every paper in the way i suggested above and make yourself stronger in areas in which u appear to be weak....read the practicals in the textbook also...what else can u do? anything u have a doubt about or are weak in, just revise it and revise it well....i hope it helps...let us wait for the other members of SF preparing for this paper reply to ur qn...pray for me..