While making Ant War, I made a lot of custom UI for things like an end game Score Screen, Achievements, Statistics, Skins, and a replacement for the default SC2 UI.

The user interface, called layouts in Starcraft 2, is written in XML and I followed a tutorial that was posted in the SC2 Mapster. I found that the tutorial was not nearly comprehensive enough and I found it hard to follow, so I rewrote it and added to it. It is now still used by the community of SC2 modders.

This is the link to the tutorial which is written in Google Docs.