Thank you very much for your feedback, it's really helpful! :) Some people have also told me about the lighting, I wanted it to be kinda dark but not SO dark, but in my scarce knowledge on how to handle the lighting, that's the best I could do xD but yes, I plan on improving that in the future, as well as giving some more indication regarding the objective.
Again, thank you very much for your comments, it's super motivating to get constructive feedback! :)