Graphoanalysis is an interesting area of study. Though there is controversy over whether this field should be considered serious science, it has been taken seriously since the late 1920's. There are many more aspects to viewing a sample of handwriting, but these are some to take in to consideration.
RacerX's sample just before this, would be very interesting to study.
*Slant of letters (toward left, vertical, toward right)
*Formation of capitals (Printed, Cursive, height.)
*Use of margins (fills page, begins extreme left, leaves space on page)
*Overall slant of sentence lines (upward, downward, even)
*Type of dotting on "i"s (high, right or left of character, strong, slashed)
*Pressure of writing (heavy strokes, light, uneven flow)
*Height and depth of certain letters (t's, d's, p's, f's)
*Closed or open vowels (o's, e's, a's)
*Certain slashes and straight lines (d's, t's, p's, f's)
*Printing or Cursive (type of characters and flow)
*Endings of certain letters and words (s's, t's,)
*Formation of (m's, n's, r's)
*T Crosses (high, low, upward, downward, short, long, strong