Questioned documents preferably originals. If not originals first or second-generation copies are preferred. All copies must be legible.
Dates of known documents need to be as close to the date of the questioned document as possible.
How many questioned documents? Is there more than one signature on each document in question? Is there more than one party that will need signature examination?
How many known documents?
Are known documents within days, months, years of date of suspected document?
How many documents need to be examined to detect alterations to documents, fraudulent additions, deletions, altered pages.
Will there be an examination of others involved in this case to see if another person can be matched as having signed the documents?