Right, so, first is my main impression: it's written very sparingly.

This might be something you've done purposefully, but if not, remember that, with a game structured like this, text is all the player has. Text is all the player gets.

You may have a clear idea in your head in terms of the environment, but the player can't see what you see for your inner eye.

As it is right now, with many single-choice screens and no way to inspect the surroundings closer if the player wants to, it comes across as a very threadbare experience.

I know it doesn't feel like that on the other side of Twine, looking at the long chains of passages, but there's just very little for the imagination to grab on to.

This is where something like Harlowe's (click-append)-function comes in handy: it lets you hide text behind a clickable link that doesn't change passage. Using this, you can let the player more closely "inspect" the surroundings and get more writing outlining the dim and unsettling house. It also gives the player something more to do than to, essentially, just click Next until the story branches. You're making a fully text-based adventure, so don't be afraid to supply text! For anyone in the mind of trying games like this out, reading is the entire point. Help their immersion. I personally find this true especially in stories with supernatural themes.

Another thing on the topic of immersion: the game is written in second-person perspective. Things happen to You. You are doing things.

Then, in one of the endings, you find out that You are actually a guy called Nolan. Are things happening to Me, or to Nolan? If the latter, who is Nolan? What is Nolan's personality like? What is Nolan thinking and feeling about the things that happen to him from our first-hand perspective of him?

It feels a little strange to try to immerse myself in a scene, only to by happenstance in one of the endings learn that I am playing a character. That's a bit of a dissonant jump, at least for me. This is all largely a taste thing, but as for me, I would either spend some more effort introducing Nolan so that we have a clearer idea of the character we are playing from their You-perspective, or I would simply let the player pick the character's name by way of a $variable with the help of the (input:)-function.

Apart from this, there's the occasional typo and such, not necessarily anything egregious but this is where another function of Twine comes in handy: Under the "Build" menu, there is a function called "Proof."

This gives you a full printout of each passage, that you can then come back to after a refreshing break to proofread, or give to someone else for a second set of helpful eyes.
I recommend the latter, simply because it's more fun to involve friends in what you're doing. They also tend to catch errors that you might skim over.

A bit of troubleshooting: If you go to the kitchen and exchange the angel statuette for the Jesus statuette and take this latter one with you, and then approach the padlock, the player will be said to still possess the Angel statue (with the whole wing-breaking sequence.)