There's a few ways that the Firebird tileset leans more towards the GB side of things, and one of those is how it expects dungeon walls to not have much in the way of decoration. That's fine and all, but that's clearly not how most people map around here, and a single wall tile for an entire dungeon can get a bit repetitive.

To fix this, I went and redrew the various wall decorations from A Link to the Past, taking more liberties with some than with others but shrinking them all down to fit in with the reduced wall height of Firebird dungeon sets.

These should rip right into the Firebird tileset, no recoloring necessary, but some finesse might be needed to get them working properly elsewhere.

Supindahood/Linkus/Sheik for the original Firebird tileset.
Whoever drew the original LTTP graphics that these are ripping off.