Here's what my tank looks like
http://i.imgur.com/FgCxtDQ.jpg
I was thinking of buying a large piece of plexiglas and balance it on the lip on the inside of the tank underneath the mesh lid, I recall seeing some people suggest that to increase humidity.
I put all the papers and small piece of plexiglas to cover the opening to see if it would help a little before buying the large piece. It didn't really help so I wanted to ask you guys if you have any suggestions or if getting the plexiglas would work.