is there any way to make this scale to the usual rpgmaker MV size without it getting blurry? thank you!
If you're upscaling with a program like photoshop make sure to check Nearest Neighbor to preserve the pixels. Alternatively you can check out this software set by my friend fmoo, the "scale3x" is useful for MV upsizing:
https://fmoo.itch.io/autotile-packing-tools