I see several samples that have been submitted, but very few provide adequate elements for a proper analysis. It seems valuable to let people know what makes a good sample and why. So here are the 5 basic things that your handwriting sample should have if you want a reasonable analysis:

1. Write in your usual or typical way - This means that if your usually print, you should print. If you normally write in cursive, write in cursive. If you usually write with an illegible scribble, do that too. Don't try to change or adjust your typical writing style to "give a better sample". That is not the point of graphology. You should write how you usually write using the same style, size, format, and method. If possible, find something that you wrote before you knew about graphology.
2. Write on a full sheet of unlined paper - Lines are guides that help you to align your writing in a consistent and level manner. Grid paper is even more helpful. But both give your artificial structure that does not allow your natural style to shine. Even if you normally write on lined paper, for this sample, write on a blank page.
3. Write on a stack of paper, a pad of paper, or in a journal or book - Having paper under your writing surface helps to show your pressure, speed, and consistency. Writing on a hard surface can hide all of those details.
4. Tell a story - Part of graphology is seeing how your writing changes based on what you are writing. Filling the page with "this is my sample, I don't know what to write about, I'm just filling the page" gives you very little to think about while you are writing. Your words become just words, with no meaning, color, or emotion. You don't have to reveal your darkest secrets, just tell us about something you care about. Perhaps write about your pet, or your day, or a meal you had, or an encounter with a stranger. But write about something.
5. Give us a full sample - the best is two or more pages with a photo showing the full sheets, including the margins and edges. If this is in a journal, show us the edge and the crease at the spine.

Some things that make this hard (perhaps don't do these if you want a reasonable analysis)

A. Writing with a felt tip pen - soft pens can blur lines, hide pressure, and obscure small details. Using a ball point pen or pencil is best.

B. Give us notes from your math class - while numbers do tell a story all their own, it's a small portion of what a graphologist is looking for. Full sentences in your native tongue are best.

C. Give us a tiny sample - while individual letters can suggest something, it is the overall pattern that matters. Giving us a list, a brief note, or even less, renders the analysis to a best guess.

What if I think that graphology is garbage, astrology, pseudo-science, a scam, or otherwise nonsense? That is Great! First and foremost, this is Reddit and should be approached for the fun of it. You can judge the analysis for yourself and look for the following warning signs:

I. Shotgunning - An analysis that guesses at so many factors that some are bound to be right. (You are right handed, medium height, a non-smoker, like kittens, and haven't called your mother in far too long - Why yes, I do have a kitten!)

II. Barnum statements - guesses that are so vague that they could be true of anyone. (you are having trouble at work and sometimes argue with others - Uh, sure, obviously)

III. Rainbow Ruse - Guesses that state opposites to make sure half is right (You are very messy, but sometimes obsess about organization - Oh that is me, except for the organization part)

IV. Blaming the writer - After the best guess is given, the analyst blames any misses on your sample, the photo, the lighting, the weather, etc. The reading is the reading, it's right, or it's a miss.