if you need more geometry so that you can work at a higher resolution you can subdivide. if the flow of the geometry is making it difficult to sculpt the shapes that you want you can use zremesh or sculptris or dynamesh. Sculptris and dynamesh or more suitable for while you are working in zbrush and just "shaping the…
In what application do you want to render? As far I know in several applications the default materials already have a detail textures input, at least I remember seeing inputs in standard Unity material, Mamorset material and there is a detail texture material function in Unreals material editor too.
Hi! I would try turning on "Use Full Precision UVs" for the mesh in the static mesh editor in Unreal. By default static meshes use half precision UVs to save memory. Edit: Unrelated, if you re-use UV space for mirrored/repeating elements you can increase texel density, meaning less jagged edges. Could use a second UV…
also trying pressing 6 / 7 on keyboard to toggle between lighting/no lighting. Kinda looks like you have lighting turned on but by default maya wont have any lights in the scene, so it would look dark like that