Lightproofing bedroom

I plan on growing on an open table in my bedroom. What problems might I face as a result of this?

The first problem that came to my mind was lightproofing the room during flowering. I heard that a Harvest can be reduced by 30% simply from going from 100% lightproof down to 99% lightproof.

One of the big challenges I face in my bedroom is that one of the longer walls is completely consistant of giant windows. I obviously have curtains but that alone will certainly not do the trick. Another problem with my bedroom is that it doesn't have a door. LOL

Could anyone give any suggestions to lightproofing my room?

put your room in your closet and only have the door to seal around?

I don't have a closet in my bedroom...

use 6-7 mil (the grow store will know what this is) plastic sheeting. usually 50 cents a foot and it folds out 10 feet high. or you could close your curtains and screw plywood or sheet rock over the curtains (from outside it will just look like curtains). duct tape and foam spray help. good luck

is your room large enough you could put a grow tent in one corner?