Just be patient and let Mother Nature do her thing. The little duckling knows what he's doing and it may take him a while to get out. Remember, he works for a bit and rests for a bit... The humidity is sooooo important! If it gets too low, the membrane will be too tough for it to get out. Even opening it briefly can make you lose precious humidity. When I hatched out my black and copper marans (I'm a newby too) a few weeks ago, I didn't sleep all weekend and I was a nervous wreck! It sounds like you're doing everything right. Keep us posted!