Sure you can, but be aware that there is always the risk that someone is going to steal (not just from NSW, but like, the entire world...!!!).
If you're after critique, I would ask BOS members who you trust (so you're probably looking at past students who have done their major works and thus have no real reason or desire to steal someone else's work) to look at your work via email addy or msn.
As it is still early in the game, your Journal probably won't have a lot in there to support that a particular piece of writing is YOURS.