If your monitors/bed are to scale you are going to have a problem. You head needs to be at the end of an equalateral triangle with the two monitors for the best mix position and sterio image.
lets see monitor spread is approx 1/3 length of the room with puts it at around 4ft apart, which puts your ideal mix position in the middle of your bed. . .
general rule is bass traps in the corners (I challange you to find a prefab bass trap with out a 90 degree angle on it).
for high end and flutter echo. . .
from the mix position (middle of your bed :P)
look directly left, you need absorbtion there
look directly right, you need absorbtion there
look directly up, you need absorbtion there
look directly behind you, you need absorbtion there
You kind of have a wonkey back wall you may end up needing to put absorbtion on the doors of your wardrobe with shelves
The heavy curtain may work okay on the left, but my spider sence is tingling on those wooden cabinets. It will probably be tough to control the acoustics in this room.
As far as the monitors go, I dunno