You need privacy, a place where you can stay away from others, and where no one will disturb you. A space that will meet your ideas and where you will feel comfortable. 😊 So it should look like that.
Paint it with your favorite colours, hang pictures on the walls or stick posters on them. Decorate your notice board with photos or other creations. 🖼 Ask your parents for new furniture, and if it doesn't work out, tune up the old one. In short, make everything to your own satisfaction, because it is your space and it is you who spends the free time in it.
KOH-I-NOOR HARDTMUTH TIP: A decorated light will turn your room into a lit stage. Take foil or semi-transparent paper, coloured or fluorescent fibre pens and create an original filter for your lamp.