If you've reached this thread you've already taken a step in the right direction.
Anyone here can make threads, but the odds are there is already a thread for what you wanted to post so there is usually no need to make a new one, just to have a mod close it and delete it a few minutes later.
For example, if you want to post
general Chloë fan-art do it here: >>>/chloe/391280
hit-girl fan-art do it here: >>>/chloe/62618
a photoshoped image of Chloë do it here: >>>/chloe/212142
a random image of Chloë, as long as it's new, do it here: >>>/chloe/212094
You can find the list with all the main thread by pressing the big, bright "THREADS LIST" button near the top of the page.
If you want to ask a simple question or start a Chloë related discussion it's usually better to post it in the numbered thread (such as "Chloë thread 720"). That's where most of the general discussions take place.IF AND ONLY IF
the thread you want to make doesn't fit in one of the situations described above then you can make a new thread.
Now, go back to the >>>/chloe/
board and ask yourself if you should really make a new thread or if you should post in the existing ones.