DAO Minor Changes is a mod for Dragon Age. It lets you change the appearance of some NPCs in the game, with a few minor restrictions and changes to the characters. It's one of the most popular mods out there, so it's pretty much guaranteed to be in demand for a long time.

It's pretty simple to install and use. You just need to download it, unzip it, and drop it into your override folder. The rest of the installation process is pretty much self-explanatory.