Good!
Good, but harder to do. It takes a properly set-up location for the on-the-wall method, and for best results proper tools (such as an optical headlamp aiming machine). Finally, it takes knowing what spec to follow (based on the lamps' lens markings).
Sometimes that's a little harder to do, but seeing as you're putting in a complete set of factory lamp assemblies into a car rather than ripping apart a projector headlamp and trying to cram it into another ripped-apart lamp assembly, you might be a little better at determing that than many. However, there's a bunch of junk out there that might initially look like an upgrade but ultimately isn't.