Once you have your win10.qcow2 file, using it is simple.
Instead of downloading a pre-made image from an untrusted source (which may contain malware or outdated patches), you should convert an official Windows ISO. Windows 10 Qcow2 File WORK Download --BEST
virtio-win.iso contains storage drivers. Download it from Fedora’s virtio-win repo . Once you have your win10
The safest "best" download is always the official source to ensure the image is untampered. Windows 10 Disc Image (ISO) Once you have your win10.qcow2 file