It is very simple to paint a room to look like a galaxy, in most cases you simply need to do an accent wall. 벽을 검은색이나 진한 파란색으로 칠한 다음 다양한 크기의 별과 행성 모양을 칠하기만 하면 됩니다. They dont need to be particularly detailed but get as creative as you like.