The interface looks very well made but the demo is way too short.
First, you should get a proofreader or a proofreading program. I'd suggest using Grammarly as it's free and correct most basic spelling and grammatical errors and if you have money you can upgrade to premium to make it even more effective.
After you have made the game to be at least an hour long, you should post it to u18chan or Furaffinity for some traffic (the people on u18chan are quite mean though so don't take their jokes too seriously).
Your character art looks very nice (Especially the faces) but the body anatomy is kind of strange so I encourage you to look up more anatomy guides to improve
I hope things goes well for you and the development of this game