Recently, I came across this useful "Identify-This-X Questions" section on Movies & TV Stack Exchange help center. Since we have similar autograph-identification questions we could probably add something like that to our site's help center as well.
We are constantly getting questions about autograph identification with very low details. By forwarding the authors of those questions to that section of our help center, we could encourage the users to improve their questions. Those questions that will be improved within short amount of time may stay open, and others will get closed like they are being now most of the time.