If for some reason you are unable to view the video, you can watch it on Youtube.
In this tutorial I'm covering how to edit compressed graphics with the help of Peer Sprite Viewer and YY-CHR. The process is similar to the one explained in the YY-CHR tutorial except you need to decompress the graphic before editing it and compress it after.
Battle status graphics: D2/E000 to D2/EBFF (headerless offset)
Shield Palette: C2/B091 to C2/B09C (headerless offset)