Yep, definitely lots of improvement. Illustrations and portraits are looking very solid.
Plague is my favourite one. The girl is too bright imo, I get the idea, but the problem is that she is so bright, that she looks pasted into the painting. I'm thinking that maybe if you get more of a value gradation into her figure, she will integrate better into the composition and the glowing effect will come out stronger. Another little problem is that moon, town and rower are all lined up. So maybe scatter the townlights a little more over the horizon, or move the moon more to the center.