Well, for starters, it depends on which version of RPG Maker you're using. And they use many different tilesheets depending on what the tiles are for. So, for example, there's a tilesheet for animated tiles, another for ground tiles, another for building tiles, walls...
The placing is different, too. And animated tiles are split into half-sized tiles, I think. So yeah, it's complicated. I tried adapting them once but gave up because it would require too much work for now. Feel free to try, of course, hopefully you'll find it easier than me.
Here's a guide explaining it for MV: https://robotsweater.medium.com/bots-guide-to-custom-art-in-rpgmaker-mv-understa...
And I also found these templates that might help: https://slyheegames.itch.io/rpg-maker-mvmz-sizing-templates
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I don't have plans for expanding this pack in the near future, but I do want to add attack and death animations to these sprites in a future update. I have many other updates planned before that, though, sorry! There's a lot I want to do but I usually have to compromise and choose some things over others, haha.
Anyway, thanks so much for the support! <3