covers!

I've been working on covers... and I'd like some feedback. The text is a bit bigger on these than I would design it on a print book, because it still needs to be readable when the cover is a thumbnail. Makes sense. (I went ahead and threw together the cover for the sixth book as well, although I'm still in the process of writing it.) They're in series order.

So... yes? No? Start over with something else? (ETA: I replaced the From This Day On cover; the original was a bedsheet.)