Anyone know how to texture models smaller than one cubic unit?

Hey everyone, I have modeled an extremely tiny paper crane model (I think a block is 30 times larger than it?), and I've noticed that I haven't been able to upscale or do even a tiny amount of detail on the texture. I know there is definitely a way to accomplish this thinking about mods such as ZAWA, but I just don't know how or where to ask a question like this. I have all mainstream sources of minecraft modeling and texturing (Tabula, BlockBench, Aseprite, etc) and I would gladly appreciate a knowledgeable texturer to help me out. Thanks.