By the right wrong reverand Percival P. Snodgroves
If your nose is so large that it blocks the view, decapitate it.
Other large objects protruding from your face should be cut off as well.
Once you've selected your stereogram, look at it cross-eyed.
If you do not see anything, keep crossing your eyes.
Often, people give up too early, but stereograms can be seen with a
bit of practice.
BEWARE. Some people may say that you can see Stereograms better if you
take drugs. Be warned that what you do see may not actually be what was
supposed to be seen.