I have a portfolio of illustrations and Instagram promotional art. It's called Wild Is the Wind: The Art of Ancilla.

https://www.wattpad.com/myworks/364246657-wild-is-the-wind-the-art-of-ancilla

It is a work in progress, and will not be completed until I've stopped advertising Ancilla and started promoting Ancilla's sequel, Soror Mystica.

There are spoilers in Wild Is the Wind, because I discuss details of plot, characterization, and my thought processes when creating, which is why I put this plug for my portfolio of promotional art at the back of Ancilla rather than at the front.