The tissue suggestion is to keep air from entering the mic, causing those pops. Just wrapping a single layer of tissue or ever a sock shouldstop it from popping. Just make sure the material is thin enough that you still get a clear sound from your mic.
The lyrics were out of time in assorted places. It just seemed like you ended a note too soon or rushed through a lyric. When you record things in pieces things like that tend to happen. Just practise the song a little more, or even go in and splice the lyrics to time.
As for the lrics themselves, yeah, they are a bit cheesy, but then I think a lot of rock music has cheesy lrics, yet I still listen to it.
My idea would be to ease up on the gloom and doom. But thats only my personal opinion. You can have cynicism without being too heavy handed.