1. To plot the Wannier orbitals, add two options LOCPROJ & LWRITE_UNK in INCAR file.
2. Run an SCF calculation.
3. After that, you can get UNK#### files that you put the orbital characters of LOCPROJ in INCAR.
4. After finishing the SCF, add four lines in case.win file.
write_xyz = true
wannier_plot = true
wannier_plot_format=xcrysden
wannier_plot_supercell = 3 3 3
5. Run wannier90.x wannier90
6. Finally you will get wannier90_###.xsf files. With these files, open these files using VESTA or Xcrysden program.