3 point is a really difficult perspective to draw. And it's recommended you have each point far off on the horizon so you don't get warping, you have warping here. Here, I drew over your piece to show you what I mean, one of the inconsistencies was that if your perspective is below the character then the angles of your environment aren't reflecting that, and a lot of your furniture is on a different plane from each other as well
Here's also just an example of what I mean by having the vanishing points off to the side so far as well, with one and two points you can get away with having them relatively close but three point does get quite a bit more complex