My family is into cycling, A LOT! We live next to the Minuteman Bikepath, the busiest bike path in the USA. We use part of our basement as our cyclery (or bike boudoir). And it looked like a dungeon down there!
So we decided to spruce up the basement with some floor paint, and a mural.
You need some stuff:
1) Some art - your own original or a poster perhaps
2) An overhead transparency projector - or a modern PC projector
3) Some paint (latex house paint is fine), you can scrounge from your paint stash or buy small inexpensive samples at the hardware store.
Step 1: Choose the Art You Want to Use.
Step 2: Create a Transparency of Your Art
In photoshop, we simplified the picture even further and approximated the aspect ratio of the wall, which is the ratio of the width against the height of the wall. That way, the wall would be completely covered by the mural image. Don't worry about perfection, you can easily extend lines once you start tracing and painting.
By the way, printing fine detail on a transparency can be tricky if you don't have specialized equipment. The main problem is that the ink doesn't want to dry. We didn't have a good printer and it's ok as long as you don't print anything complicated! This is another reason to keep the design simple.
Step 3: Prepare the Surface of the Wall for Painting
Step 4: Place the Projector With the Art Across the Room
By the way, we got this projector at the MIT flea market. The guy who sold it to us wasn't sure if it worked so he actually gave it to us for free! But it did work! And once we got done with the project, we gave it away on craigslist to someone else so they could do a mural too.
Step 5: Project the Image, Trace It and Paint It
Trace the image with a pencil and start painting. Paint the light colors first, let dry and then paint the dark colors.
We painted the mural with colors we already had, so we substituted the Yellow on the jersey with red. We realized once we started tracing that the peloton of other riders in the back would be hard to paint, so we decided to skip them altogether. HEY we didn't want to spend a week on this and cut into our cycling time :)
Step 6: Paint It and You're Done!
If you are some kind of perfectionist, go ahead and use masking tape, we painted in free hand and it came out alright! Again, we were doing this quickly, WE ARE CYCLISTS NOT ARTISTS!
Hope you are inspired to make something like this!