Towergirls has gotten a sudden resurgence on /tg/ lately. I like the artstyle and designs of various princesses, so I decided to contribute some fanmade princesses of my own.
Demon Princess is, of course, just a Towergirlified version of Zaran il Legio. Abyssal Princess is based on that drawing of a deep sea mermaid I did (I liked that designs enough that I wanted to reuse it somewhere).
I can't take all, or probably even most, of the credit for the pros/cons, dowries etc. as those were largely done based on feedback and suggestion of people on /tg/.
Also, I'm not sure if this counts as mature content or not, as while nothing explicit is show, sex gets mentioned.