The first painting is from the Harry Potter book called Moste Potente Potions. I fell in love with the illustration of the spider lady and just had to based my Halloween project around her. Here's some information on the spider lady that I found on Harry Potter Wiki:
"In the book, there is a picture (Figure VII) of a woman
with a grotesquely large spider on her head, almost worn like
an ornament. Whether or not this is an effect of a potion is
unknown. It is possible that it is the side-effect of
accidentally imbibing a Polyjuice Potion contaminated by
spider hairs, similar as to when Hermione was partially
transfigured into a cat when her Polyjuice Potion was
contaminated with cat hair. "
Check back tomorrow night to see what new lady concoction will be painted.