Visualization is the ability to conjure up images in your head. The best way to do it is by observing. Paper folding questions usually have certain steps which requires the candidate to mentally create those images in their head. You follow the instructions as given and by the time you reach the last step, the answer is in your head. All you have to do is match it with the options. To get to this level, start by observing simple objects and shapes for a minute or so and sketch them out. Once you get the details right, move onto more complex ones. Then start replicating tessellations and figures and by then you would have got an accuracy of 95%. Next, start practicing paper folding questions provided and by the end of the last quiz, your accuracy will reach 100%.