Preparation

• 1). Check government safety regulations if you need to strip old paint or paper off the ceiling, or if lead-based paints are likely to have been used. Also be aware of any structural problems if the ceiling plaster is old.
  
  
• 2). Measure the ceiling width and length, and draw a to-scale grid on paper, using 1-inch per 1-foot grid squares. Plan the design by finding pictures of galaxies and planets in books, or online from government space agency sources, and sketching some ideas on paper. Copy a photograph of a particular galaxy, or create your own design.
  
  
• 3). Practice different paint techniques on paper and then on sheets of plywood or hardboard painted with black or dark blue ceiling emulsion. Taking time to perfect your techniques before embarking on the ceiling saves time and money and gives you a superior end result.
  
  
• 4). Check out digital photography tutorials on how to create galaxies and planets, as you can recreate the same effects on the ceiling using spray paint. Follow each step to see how each layer is built up and which digital brush techniques are used to achieve different effects.
  
  
• 5). Practice smoothing a faint mist of spray paint into a diaphanous dust cloud using old rags, or using a fine paintbrush to paint in distant stars around the galaxy in luminous paint. Take time to get used to trying different techniques and develop your confidence in tackling a galaxy ceiling. Experiment with spraying paint from a range of distances to see the effect.
  
  
• 6). Clear the room and cover fixed furniture and carpets with dustsheets as protection. Set up a platform using planks of wood and sturdy stepladders, so that you can stand upright and use both hands to work on the painting rather than teetering on a ladder step. Tables might be useful, as long as they don't tip when you stand at one edge. Ensure that the platform is safe so that you can concentrate on the design and painting. Have a chair or steps available, so that you can go back to floor level easily and check the painting.
  
  

Painting the Galaxy

• 1
  Use a pencil to draw a ceiling grid.macro pencil on white background image by Anatoly Tiplyashin from Fotolia.com
  
  Draw a grid of 1-foot squares on the ceiling in pencil, using a long ruler. Draw out the basic shapes of your design on the ceiling, transferring the details from each square in your paper grid into each square on the ceiling.
  
  
• 2
  Build up the galaxy in steps.galaxy image by Sergey Galushko from Fotolia.com
  
  Paint the background in black or dark blue paint, using either a roller or spray paint. Lighter shades of blue can be added at a later stage -- this is simply building up the design in stages. Allow the paint to dry before starting work on the stars and galaxy.
  
  
• 3
  Build up the galaxy using spray paint to mimic the concentric swirls observed in the universegalaxy image by Sergey Galushko from Fotolia.com
  
  Spray paint or use a brush to paint the central core of the galaxy. Again, refine this later as this is simply to get your design mapped out. Use spray paint to bring in the concentric swirls of stardust, rocks and planets around the galaxy core, or to suggest the vast clouds of hanging dust that signify less-defined galaxy shapes. Allow to dry.
  
  
• 4
  Populate the sky with stars.cosmic blue image by Antony McAulay from Fotolia.com
  
  Add stars in varying degrees of magnitude across the ceiling. Use shades of blue to signify those far away, and a brighter white the nearer they are.
  
  
• 5
  Create planets using paper and paint.la galaxia image by caironbohemio from Fotolia.com
  
  Create a planet by holding a plastic bowl or a large plastic bin lid against the ceiling, and spraying lightly round the edge in white or blue. Remove the bowl or lid, and spray two or three colors over and within the circle, such as red, orange and blue. Tear a small piece of glossy magazine paper, spread it on part of the planet, then peel it away to reveal landmass-type shapes. Repeat across the surface of the planet. Finally, replace the bowl or lid over the planet, and spray around it with dark and light blue, blending it in with the background. Create a dark side to the planet by removing the bowl or lid, and spray painting across it to suggest shadow.
  
  
• 6
  Paint a galaxy and transform your ceiling.Couple and night sky image by Warren Millar from Fotolia.com
  
  Use specialist paints to add glistening stars, luminance and phosphorescence across the ceiling so that the stars and galaxy glow in the dark.