I have my snakes in glass and it took a lot of tweaking and advice I found here. Everything everyone has said so far is what I would say too.
I have foil over part of the screens and plastic wrap over the other part. There is a small section for ventilation. In addition, my husband made me the homemade humidifier that is shown in a sticky here, but I don't know how to put the link in my post. I think it's in the husbandry section. I add damp moss during sheds for that extra bump.
I used the carpet when I first started, but tossed that pretty quick. Went with the newspaper/paper towel advice I got here and I love it! It's in sections so it's so easy to spot clean (and you can actually see the pee rather than just smelling it) since everyone's right...they pee a lot! It also makes weekly deep cleans a snap.
Trust me...you can't go wrong asking folks here...they know their stuff
Robbin