The Harry Potter Room...

this 1 is cool. :)

well which house do u like best for ex: griffindor the দেওয়াল can be red and yellow অথবা আপনি can do a darker shade of blue and get some harry potter fatheads (wall stickers) and some glow in the dark stars that stick to the দেওয়াল happy decorating

রঙ in yellow, কমলা and red could be appropriate. আপনি may either buy some Gryffindor stuff অথবা make them, for example. অথবা get inspired দ্বারা the movie Gryffindor Common Room. That is, if আপনি feel like belonging to that House. আপনি may choose another house, with another set of colours and props.

Depends on how extreme আপনি want to go.
4 walls, 4 houses - two thick stripes vertically. Red and Golden for Gryffindor, silver and green for Slytherin, etc. Black cover onto the বিছানা with Hogwarts crest on. আপনি can also get posters of the crests for each walls. A HP posters, a Snitch hanged from the ceiling.

অথবা আপনি can select a house and go after that: leather stuff with some vintage দেওয়ালপত্র (gray background green pattern) with green border/dark yellow walls with red border and Gryffindor crest, red chair, carpet in Victorian style...

অথবা আপনি can go Great Hall style. Some matte color onto the দেওয়াল (grayish brown) and paint candles in eye level and open sky onto the ceiling. আপনি can put the crests onto the walls and get HP style ঘন্টা glasses (test tubes filled with colored sand). Posters, scarves, lava lamps (yellow and red ones).

অথবা there's the Black style. Stylish দেওয়ালপত্র classical furniture Gryffindor and Hogwarts crest, Marauders poster, motorcycle poster, bikini girl poster (or pants guy if আপনি are a girl), family বৃক্ষ (poster অথবা a painted বৃক্ষ দ্বারা your own lil hands with pictures of Bella, Malfoys etc above the names). And a name board onto your door like Regulus Arcturus Black. Dependant on how hard core আপনি are, আপনি can cut Dobby's and Kreacher's heads from posters and stick them onto the দেওয়াল (joking). Black family crest is compulsory.

অথবা Ron one... Quidditch oriented. Harry playing, Cannons poster, Viktor Krum poster, Irish Hat, textile Clovers, brooms, Snitch hanged from the ceiling.

অথবা Harry Style: totally ordinary bedroom with a calendar on the দেওয়াল counting back the days till the 1st of September and a whiny bird in a cage. :DD

Good luck.

What house are আপনি in!?

Thats a big deal, like Im Slytherin, so I have green walls in my bedroom, with like a silver and green bed-set. I have snake-themed furniture and a slytherin pillow/throw blanket. (You can buy those online for any house.)
I have Harry Potter posters on my walls, and I painted some of my পছন্দ quotes.
And the Deathly Hallows symbol is also painted there.

Over my bed, I have the Hogwarts crest (its like a REALLY big sticker I bought online)

Thats what I did. But আপনি could do something similar, with your own personal favorites. (If ur not a slytherin, change the colors, my posters are Severus, Draco, Bellatrix etc, so if those arent your favorites, change them!

আপনি could do something like this i wouldent overdo it too much