Make your map bigger! Textures always serve a purpose (in this case, learning) so that must be kept in mind when making one! Obviously, the more stones or whatever you have, the less pixels each one will take up. So yes, that's less info for your normal map as well. Think of it this way: if you made this texture with 2 big…
It all depends on the resolution the texture is going to be, and also what scale the texture will be in the environment. Ie: if that texture was gravel, the scale would be different than a stone wall. Also keep in mind that sculpting 284 rocks properly takes a lot of time, if it is an exercise that's cool, but in…