On ponychan's training ground, a thread popped recently proposing a characterization exercise. For the exercise, I asked on the TTG channel who I should pick, and they chose Trixie for me. This is the result of the exercise.

Quoting Ganymede here:
"Here's how this works:

You write a short scene, 500 - 2,000 words, and then we read your scene and tell you how well you wrote that character.

The scene is:

A young filly is crying in the town square.

Write a scene where:

1) Twilight Sparkle happens across the filly during her normal errands.
2) Rainbow Dash sees the filly as she's practicing her stunts.
3) Pinkie Pie comes across the filly as she's doing... whatever it is that Pinkie Pie does.
4) Rarity notices the filly on her way to get more supplies.
5) Fluttershy comforts the filly as she's coming to visit Rarity.
6) Applejack greets the filly as she's coming to setup for the market.

This is a "pick n' choose" list. You don't have to do all of these, and you don't have to write them in any particular order. If there's only one character you think you need work on the most, feel free to only write the scene with that one character.

We're looking for:

1) Dialog
2) Body language
3) Vocabulary
4) Thoughts and internal dialog
5) General approach (how does the character handle the situation?)

There are no rules as to how the scene plays out or how it ends. Just imagine the character in the situation, and play it out exactly as you think it would.

It is HIGHLY SUGGESTED that you put these in a google document, so it doesn't clutter the thread. Also, enable comments.

You may write the scene with a character that is not one of the mane 6, if you wish, although it is recommended that the character have a personality firmly established in cannon. "