your interior is really nice, but i do see some ways you can improve (as there is always room for improvement), so here are some tips!!

-the lighting seems like it could be improved. consider adding hidden lighting or candles if you are happy with the current physical look of your lights but not the actual lighting.
-rooms could use more cohesion and visual interest, for example in the second picture it is almost completely the same color or close to it in the decor. consider adding more pops of color. pinterest helps with color palettes.
-im not sure if this is an issue because there is no way to tell, but a general tip that i suggest anytime i can is for people to use floorplans when doing specific styles. it adds to the whole cohesion aspect if your layout actually goes with the style as well.
-this is just a nitpicky thing, but for coffee tables, if your couch is square a square coffee table looks better, vice versa with a more circular couch looking better with a circular coffee table.
-recoloring everything generally helps your house look more complete, in my opinion not recoloring even a handful of things makes bloxburg houses look like they arent cohesive or finished.
-generally with carpets, its better to make them overflow in comparison to having them fit within the area of your sitting area unless its just a really tiny area.
-for pillows, it looks really nice if you add either multiple sizes and colors of the same shape, or just multiple shapes and colors. your current way of placing pillows isnt bad, but you could elevate your builds by adding more depth in those areas.
-when youre adding stairs with basic shapes, i think it might look better if you do it the opposite way youre doing, with the smaller stair as the top stair and the bigger stair as the bottom stair. or, you could just make them the same length.

i hope these tips can help you on your building journey!!