Before I start the proper review I want to tell you about how I review things. I don't like to sugarcoat things and tend to be unbiased because I believe honest review and feedback is the most important thing that artist can receive. I can be harsh but remember that's for your good and I will give you some advice. ok? Let's begin!
Well, your game is very short and boring. There's that one clicker moment which I think is out of place and can be changed without anyone noticing. Audio is a bit too loud for my liking but that's my problem and to be honest you better handle audio than me.
So we know about your 2 main problems and down below I will describe how I would fix them:
Graphics. I won't talk about shadows and perspective, it's too hard and I believe you will master this two things with experience. But I will talk about details. Were I you, I would add more lines, more furniture and more colours. It's hard to spot where walls start and where is floor so a line here and there will make a big difference. You little prince is a prince after all and he needs to show his splendor so adding more furniture will be great idea and will help with emptiness. And lastly colours, remember the devil is in the details. While adding more stuff to fill the room I would use more colours to make the room more engaging.
Now let's check the clicker part. While writing last part I left the game running and nothing happened, monster went sleeping and didn't bother to find me. I would add small little detail, a meter (slider or just a number) showing howuch time's left until game over. Trying to make a part of yoyr game tende try to figure out what causes player to feel uncomfortable or nervous. This trick always works.
Here's my review. I hope you will read it, take a notebook and write down each problem I have written. But I must give credit where credit's due. For a 12 year old now proper gsme developer you did pretty good job. I have started my journey 2 years ago just before I started going to university and comparing me two years ago and you now there's nothing to compare. You beat past me in every way possible and I wish you will keep this hobbyand practice as much as possible. We love games and that's why we make ours. Congratulations and good luck on your new path!