Thank you your explanation is really helpful. And yes I agree about reducing contrast for background rocks and increasing it for the top of the walk-able rock ground. I will do those edits quite soon and post an update.

For the future though, would it be better if I only drew rocky pattern around edges or should I keep them on each tile only bigger and less attention grabbing?

Maybe try getting the legs on the same level (make a line if it helps). Also I would recommend having the feet flat if all the character does is keeping them on the ground

Sorry for not responding, right now I'm not redrawing the tileset because I need to have it done rather than done well because I only have 9 days to finish all the coursework.

And yes the (potential) game will be 2x or 3x the original size because I like larger pixels. Though I agree that there is way too many small rocks, not really because they are small but rather unappealing and sort of hmmm just don't look well.

Hey, thank you for advice! I just finished adjusting the tiles (tried to do it fairly quickly but couldn't) and that's how it looks now. I personally think it looks slightly better than the previous version, though after the assignments I will try to redraw it from scratch.