how_to_make_crawl_tourney_banners

This is the banner template file
SVG banner factory-> https://github.com/crawl/dcss_tourney/blob/master/image-templates/bannerfactory.svg

Open it in Inkscape
Create new text
convert text object to path
Select path text and the wavy line in the middle on the left and run the extension to make the text path have the ribbon effect. 
There are instructions on the far right. I use a horizontal offset of 70 which corresponds with the center of the banner

The exported image will auto-size to anything visible so hide everything except the shadows and banner you want, along with the ribbonified text

Export to bitmap (save as png)

The file didn't have all the layers so I made them. I also would cut an paste the ribbonified text to its own layer for the export, then paste it back to the text layer in case I wanted to edit things later

I think I could crank out a new set of banners (in my current style) in probably 30 minutes.