The design of a bedroom depends on a few major factors. The first one is who will be occupying the room. For instance, the design for an adult will be absolutely different from that of a kids' room. Similarly, the size of the room also matters. The plan that will suit a master bedroom will not be right for a small spaced one.
The color of the walls should have a calm and serene effect on your mind and senses. Therefore, blue, green and lavender are the most popular choice of colors. However, for a more youthful touch, then opt for some warmer colors like misty peach, buttery yellow, delicate pink, light shades of pastels, and so on.
If there is a terrace attached to the room, then you can keep some formal seating arrangements over there as well. The finish and shades of the furniture should complement the colors of the walls. The lighting of the room should involve proper use of both the artificial light as well as natural daylight.
Use of natural elements like houseplants can make you feel closer to nature. Plants that bear flowers once in a month is the ideal choice for this purpose as they will bring about a change in the look of the room after every few days.
Keep enough storage space to store their toys, books, crafts and other knick knacks, which need to be stored properly so that the floor space remains free. Apart from the bed and cupboard, include shelving, hanging shelves, freestanding bookcases, etc. as per their requirements.
The room should be adequately lit with table lamps, floor lamps, wall sconces etc. There should be enough fabrics in the form of bed sheets, curtains, pillows, throw pillows, and area rugs to give a softer feel to the room.
Use items made of metals, glass and other polished surfaces for decoration as they can reflect a lot of light. Putting up a well decorated framed mirror on a wall opposite to the window can make the room look even more brighter.
Combine all these ideas to make a unique design that suits your taste, style, and requirements. Just keep in mind that it should not give a cramped look to the room and the look should make you comfortable.