Surprisingly interesting game. Checked it out on a whim, despite the artstyle, and it's a fresh, imaginative scenario that plays with themes & sexual content you don't see a lot or in that combination.
I haven't played very far yet, but I'm looking forward to see see what it matures to in the future.
Not sure what you're planning to do art-wise, and what your plans for evolving it are (given that the main emphasis is on the writing).
I'm not an artist myself, but there's a couple of things you might want to consider:
1.
F95 has a recruitment&service section, where you can see if you can find an artist you can work with.
https://f95zone.to/forums/recruitment-services.117/
You've made a strong showing on your initial release despite the art, and that may get artists interested in working with you. You should probably google some artwork that plays into the erotic horror theme and create a concept art board that you can use to communicate visually the things you're looking for in the art. ('cause you're probably not looking for glistening, shiny anime bodies)
You should probably also make an inventory of the art requirements & art demands, so you can eyeball what a fair rev share would be - or see if you can go comission-based.
2.
If you're determined to do the art yourself, don't let some of the criticism deter you. Start looking for the criticism that points out what you can improve.
So far your style is very minimalistic and doesn't embellish with details, but some characters obviously have a core idea that you want to communicate.
Try to focus on that and look for ways to better convey what you're trying to portray. Especially given the background imagery (which is high detail) you may want to move into a bit more detailed drawings that emphasize the shapes with shading and add more detail - you might especially look for small unique details on the body to better convey the shape and you could look for small intricate details (accessories, clothing) that play into this elaborate style of gothic horror.
Pick, for instance, the drawing of Theresa with a see-through shift and the yellowish skirt. While there are things that could be improved (more detail on the body, slight shading to emphasize the contours and more detail in face & hair) it overall gives a good expression of the character in that situation. It gets across what it aims to get across, and the color of the shift & skirt play well together.
On the other hand, take the picture of the naked woman (forgot her name) on the docks. She's clearly meant to be curvy and a bit chubby, but the lack of shading makes her seem a bit flat, and there aren't any colors that interact, so the result feels bland, lacking detail and doesn't quite convey what you're (I think) trying to convey: a chubby, confident woman perfectly okay with her curves, which makes her alluring and interesting.
One thing I've recently started to encourage my artist to do is to make moodboards for characters, clothing & sex scenes. (based on the advice of someone who knows more about making artwork than me) He basically googles art that covers what he's aiming for (for example how others have portrayed chubby women, how the anatomy looks, how you can make the look seem alluring & enticing etc.) and builds a collage that covers clothing articles, expressions, body shapes, etc. and uses them as inspiration and orientation, both for things he'd like to imitate and things he definitely doesn't want to repeat or where he's got a different idea.
Having a visual frame of comparison ready might make it a lot easier to transition the artwork into a level of quality & style you want to aim at.
All in all, I'm really curious to see what the future holds. Will probably sit down one of these evenings when I've got some free time, with a nice batch of earl grey, and take a deeper look into the story you're weaving.