Hey! I really loved the short little horror game you have here. Love the world you built and the art is great! I feel like you could do a little series of stories all happening in Foal's Creek, and make it into a collection.
Anyway, I have a suggestion, and not to give away any spoilers, so I'll be vague. Perhaps you can change the colour palette of the scenes, fade it darker and darker towards the end to create a sense of foreboding and build on the tension.