help with normal maps for bb models

[pseudo moth]

so, Im learning how to make normal maps to render my blockbench models, but how can I make one thats smoother? besides just enlarging it, I feel like to get the best result I would need to generate a normal map that doesnt blend between the pixels, and I'm not really sure how to do do that. (attached one that sucks is my model, and this is the effect im trying to get https://www.artstation.com/artwork/bl6mPa)

[small plank]

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[pseudo moth]

ignore the z-fighting thats kind of a solved problem im too lazy to fix rn

yuhhh kinda improved it by making it closest rendering in blender, but like is there a way to generate the normal map without blending between both pixels and only 1 maybe? or is the solution really just making it comically large