I usually only open 1 or 2 windows, the whole point is to keep it as dark in the blind as possibe. First off try to set your blind so you will shoot north or south so you can keep the sun from shining in in the morning and evening. I usually wear black but i sometimes wear camo and put up the camo shoot through screens. I also try to brush my blind into the cover as much as possible. I have found blind hunting to be very effective after finding out these rules the hard way, so learn from my mistakes and kill the biggin lol. good luck



marty