sailormoon

Dear advisors, My bedroom door faces the staircase going down to first floor, but the staircase is of a C shape, ie: faces a corner first, turn right, a few more steps and right again to the first floor. what can I do to balance the bad fengshui about this. Does placing any pots or plants at the corner of the staircase helps? And also, there is a window on the left and directly above my bed. I understand that it is not good to have a beam above the bed. So what can I do about this? Thirdly, my room is actually above the guest toilet, I believe this is another bad arrangement. Do u have any advice for these? Please help as I do have sleepless nites and nitemares. Grateful for any kind advices. Thank you.