Gender neutral colors to consider are purple, orange and green. [2] X Research source Choose contrasting colors that look trendy, youthful and really pop, like rich dark purple with yellow. Bright red also goes great with purple, and so does black. Stick with neutrals if you like to change your color scheme often. This makes it easier to switch your accent colors.

For instance, if your room currently features a lot of pastel pink, update it by adding accent colors like fuchsia, hot pink and chocolate brown. [4] X Research source If your room currently features a lot of pastel blue, update it by adding some royal blue accents and maybe even hunter green. Whatever you end up going with, strive to choose colors that contrast and play off one another.

Streamlining in any way that makes your room look bigger and less cluttered will make it appear more adult. If your parents are reluctant to let you paint your walls, they will be a lot more willing to allow you to paint just one. Make sure that the paint job is done neatly so that everything looks nice and crisp. If you don’t want to paint a wall, then try using peel and stick wall paper, a wall decal or stencil, or a tapestry to accent the wall.

You could also use a guitar rack to neatly display your instruments, and maybe even put a keyboard somewhere in your room as a final dash of style. Check out your garage for cool items that you can re-purpose and display in your room. Cut out images and advertisements from magazines to accent the colors in your room in a unique way. Display old license plates on the wall for a colorful, masculine touch. Paint, hang, or display old surfboards, sporting equipment, and typewriters for a mature, vintage style. [6] X Research source

Add a throw rug that matches your new color scheme. Throw rugs pull the look of a room together and look very adult. Get a plant for your window sill. Choose something low maintenance, like a fern or potted aloe vera plant. [7] X Expert Source Suzanne Lasky, ASIDInterior Designer Expert Interview. 31 March 2020. Arrange ore adult-like items on bookshelves, such as pictures and trinkets, and eliminate more juvenile items, such as stuffed animals and toys.

If you aren’t sure what kind of design works best, choose bedding and trimmings that are solid colors. Add a dust ruffle to your bed that matches your new color scheme, which will hide any storage and clutter you might have underneath it.

Always get permission before you permanently alter any furniture in your room. If possible, try to get pieces of furniture that match each other or are part of the same set. [9] X Research source

Stack a few warm colored blankets on your bed in the wintertime for a cozy look. Try hanging colored lights (like Christmas tree lights or Chinese lanterns) around a window, your bed or a bookcase. This can add a fun dimension to your room. Fold blankets and place them into a basket for a neat way to store and display them.

Make sure to declutter the dresser and bookshelf and only display your nicest items on it to make it seem more grown up.

If you aren’t sure, go with the arrangement that makes your room look the least cluttered. Open spaces are streamlined and more adult-looking than a cramped room. If at all possible, don’t put your headboard against the same wall as your bedroom door, since this can have a disorienting effect on anyone who enters.

Also remove any dolls and put visible toys out of sight. Store them in your closet or give them away. The same goes for childish books. In order to make your room look more grown up, you have to be willing to put away some of your favorite childhood things. However, you don’t have to get rid of everything! Keep a favorite item out and store the rest away.

Simplifying and organizing your room will lend it a sleeker, more mature vibe. Use brightly colored storage boxes to organize your loose items. You can organize your room and add a pop of additional color at the same time. [13] X Research source

Sort through your closet and get rid of any clothing and items that you’ve outgrown. Get a new set of clothes hangers that are sturdy and identical. Get rid of any mismatched or broken hangers. If you want to go a step further, organize your clothing on the rack by color or by function.

Keeping your room tidy definitely gives your bedroom a much more mature vibe. You may also want to get a nice looking hamper to throw dirty laundry into so you will not be tempted to throw it onto the floor.

If you’ve moved your bed to be the focal point of the room, making it every day is a must. You may also want to arrange a few throw pillows and blankets on the bed to make it look appealing. This may even help you to feel less stressed when you enter the room.