I made a small sized tileset and spritesheet for a rpg/roguelike type of game, just asking for critique or/and advice. Thanks!

(images are large so links only)
tileset/spritesheet:
https://i.imgur.com/UXC4yRW.png

mockup dungeon in loose c64 specs:
https://i.imgur.com/qYbxhgq.png

A small number of places in the dungeon should in theory use a sprite overlay for clarity but that is self evident.