Seconding what AndreiT above said re: text boxes, though ultimately it comes down to personal preference. It might also be useful to add a generic ‘can’t use this here’ message for when a player tries to use the wrong inventory item (possibly with hints for multiple steps puzzles?). As it is you get the same text box that you would get if you hadn’t used an inventory item at all, which can be confusing if it’s your first time seeing it! This was esp. noticeable when painting the plate since there’s a lot of steps and, like—I knew which items I had to use, but not where/in which combination, etc, so there was a lot of clicking around :p
That being said: I really enjoyed this game! The art is gorgeous, the changing environment is a neat touch, and the tension was really, really well done, as was the creeping sensation that this was not going to end well at all. Def will be keeping an eye on future developments!