My advice would be, read the Silmarillion. Then you will find that you can't build the rooms fast enough to release all the creativity, and writing the descriptions will be the best part of building! But, you say you're on time constraints, that really bites, all I can recommend then is try to get in a relaxed, contented mood, then try the room descs, in any case trying while you are frustrated will accomplish nothing but to embarrass you in front of your QC. Best of luck.