Room in an apartment being shared.

[myfs_102058]

http://www.geomancy.net/wbimages/smiles/icon_cry.gif
Hi I'm new to the group and have a few questions.
The windows in my room face my auspicious direction (kua 8)W, but there is a balcony outside there, and the parking lot of the building beyond that. There is stuff on the balcony belonging to my roommates(clutter), but I covered the nearest stuff with an orange tarp. Also one end of my windows cuts into the SW relationship corner.
My computer faces one of my inauspicous directions S, but it allows me to see the door, and lets me have my back to the wall. If I change it to a good direction (W, SW) my back will be away from the door. Which is better?
The entrance to my room is a tiny portion in the SE of the room indented from the rest of the room, and it also happens to be the wealth location. I did put a small mirror on the door to try to expand and fill the space.
My room itself is in the W or almost SW portion of the apartment itself, but as I said, the door is in the SE part of my room and faces S right across one of my roommate's rooms.
So, is it okay if I have a small amethyst purple crystal pakua hanging from a red string over the door to my room?
As it is, from the apartment front door to my room is an L shaped hallway and I am at the end of it. However our apartment IS in the SW part of the building actually. I began using one of the entrances into the building which is on the NE part of the building as my main entrance, though the main entrance is on the E side of the building facing W.
I appreciate any answers and suggestions, and look forward to communicating with the rest of you.
Thanks so much.
Peace and blessings.