Third-person narrative is the writing style I'm most comfortable with, and first-person dialogue (even inner).
Example:
Almost unseen in a corner, quietly listening to the antics before and then the briefing with nary a nod, a pile of cloth suddenly becomes animate and sits up a bit. A conical hat is pushed back a bit so a beaked countenance can appraise the room with a bit of a wary aged squint.
"We getting resources, or do we improvise?" emanates from the bird-like entity as it appraises the briefing. Uses the [ b]text[ /b] text formatting, available at the bottom of your posting window in 'How to format your text'.
The tengu's head tilts slightly as he appraises the group again and lets out a slow exhalation.
My hand might get tired from this one. Let's see how they work in the field. Uses the [ i]text[ /i] formatting
His cloak slides open slightly to show a well-crafted crossbow slung under one arm as he sits up a bit more.
The above demonstrates a brief written description, some narrative from the character in question, as well as the thought processes of the character. Doing this engages one's fellow players as well as helps in the 'fleshing out' category.
Important: Never presume the actions one takes are automatically successful, and never assume what the reaction of others will be to one's actions. That activity is known as 'power-posing' and it's as rude as trying to take control of the person next to you at a physical table's character sheet and run their character (without permission)
Also important! There is a 'Preview' button under your Posting window. Use it a lot, it makes life a lot easier!