Attics have a tendency to be cramped and bedroom attics are more inviting if there is a window that provides natural light to the room. When there's no room for windows, a skylight can be built sometimes.
Attics sometimes contain lofts that can be used as sectioned off areas for reading or playing games.
White paint, furniture and linen help brighten a room, helping contrast the darkness that is common in an attic.
Since space is often limited in an attic, bedrooms should contain furniture that can fit into the cramped spaces of the attic. Also, some walls can have furniture installed in them such as bookshelves.
Partitioned walls can sometimes be expanded in order to provide more space for the attic bedroom.