I've been saying since I started at the Milk Market last year that I must make some bunting for my stall and yesterday I eventually got around to making some. I had a good root through my fabric collection to find yellow and blue prints, as I wanted the colours to match my sun and cloud logo. I then made a cardboard template, cutting my fabric 1cm bigger all the way around. I cut out two triangles for each piece as my fabric is only one sided. You could use felt or a vinyl if you wanted to make faster bunting where no hemming is necessary. Or earlier this year I made newspaper bunting for Johns birthday party, by ripping the papers with a metal ruler and sewing the section onto some white ribbon on my sewing machine. It only took about an hour to make 20 meters of bunting....super fast for a large party....and also nice if it's for a guy as it's not too girlie.
I then sewed a straight running stitch most of the way around, and then turned them inside out, and stitch around the edge in a straight stitch. This means I'll me able to bung them in the washing mashing without them fraying. If you are making bunting for a once off occasion there is no need to go to all that extra effort, but I need mine to last for at least another year or so.
After you have all you triangles done, then co-ordinate them in a bundle, thinking about what colours and patterns would look well next to each other, trying to keep it balanced through your whole string of bunting. Then find a spacer, I used a paint brush, something that will help to give you a consistent gap between all of your panels. I used a zigzag stitch to attach the panels.