One of my colleague bought some nice stereogram book and i tried to look on it to find the answer. I have tried this when i was a child, but i never made it so far, so i wanted to give it a try again this time, but too bad i couldn't make it again. There is a direction on how to do it, but i can't do it either. I think i have to find another solution to get this through, since i was very curious on how people can see the 3D images so fast without having any trouble at all.
I browse the Internet and found some website that discuss about this. One of them are 3DWonderStuff and it wrote some techniques that can be used to see the 3D images. I will read it more carefull and hopefully in the few days later, i can see the 3D images at the book.