Foreword to the tutorials
These tutorials assume you have already been familiar with the Wannierization workflow using QE and Wannier90, a good starting point could be the tutorials of Wannier90.
The input files of each tutorial can be found in the WannierDocs.jl repo. First git clone the repo, and run it when you are going through the tutorials.
In the repo, the convergence parameters (kpoint sampling, ...) in the input files (and the generated amn/mmn/eig/... files) are extremely loose! This is on purpose to reduce storage size and save computational time. Thus, it is expected that the band interpolation, the resolution of real space WFs are not good.
You should rerun the calculations with production-quality convergence parameters, and the results should be much better.