since there are couple of people keep asking me how i DIY my filter.. here u go, i believe the more i'll share, the more i'll learn
at first, i read couple of diy macro through online.some they used binocular lens which i don't think it work. Den, i figure out dat raynox 250 used a magnifying glass(high quality wan). Credit to Jing Ming my classmate who 1st give it a try and it actually works. So, the next day after dat, i quickly get my self a magnifying glass and have a try. Here are the way i do my filter.
first, get ur self a cheap/unwanted uv filter.

2
nd, i stick some tape on the side

3rd, i cut a
pvc pipe about 2cm(actually bout 1cm-1.5cm will be enough) then tape it up

i cut the magnifying glass handle and sand paper it

then, i stuck the magnifying glass and the filter in to the
pvc tube, so it can hold each other.Actually i tape the
pvc tube just now so it can fit the magnifying glass and the filter
firmly
wala ~! I'm ready to go for some macro shot :)