Moonscented, I ran your Rainbow passage through Singscope. It looks like your pitch is running somewhere around E3, a bit low. Many of your sentences start off at a good pitch, A3 to B3, but then dip within a word or two. Pitch swings are good, as a feminine voice swings much more than a male voice, but the average should be a bit higher.
(I do pretty much the same thing. It ain't easy, but I'm working on it.)
Sent from my iPad using Tapatalk