????? Each tile on the PNG is 8x8.
I couldn't see it in the explanations, so I made a note in case there are people who can't see like me. By the way, thank you for your assets.
OK, this is what the sheet looks like:
this is what it looks like with an 8x8 grid placed using an editor:
Hope this is more helpful to you and others :)
Thanks for using the assets and your feedback. :)