Working on an evil!Sorreltail video (the song that inspired it is from The Offspring - "You're Gonna Go Far Kid").

Sorrel ends up at first wanting justice for Bramble (her super close best friend/ kinda crush or young love situation) and when she notices how Firestar is still biased against Bramble to an extent, she feels the drive to make things right.
This scene is where Sorrelpaw calls Firestar out for naming Bramble -claw (after his villain father).
Mapleshade is watching, as her interest in Sorrel comes from blood relations: her father is Whitestorm who is the cousin of Mistyfoot (and her littermates), and thus she has ties to the "Crooked/Oak should be destroyed" plot.
So that's the basis.

I'm not an artist in terms of digital art, and this was made in MS Paint. So not great XD