Remove shield by switching it , drop the bulb into the socker, put back the shield
Dig holes for the ground stakes, hammering them in to give extra stability and make them sturdy, then screw in the up light fixtures at the ground stake.
Running the wire just above ground at each fixture, and making sure to leave extra wire in case to make any changes.
Simply by cutting into the loops stripping approximately an inch off each end of the wire, there will be 2 connections at every light fixture, using a good gel filled waterproof connector that snaps tight will ensure a long lasting connection.
Based on your applications, unlike spotlights, flood lights are for shining on a relatively big area, let's say you want to light up the walls around your house, you can place the flood light at bottom of the wall and face it upwards to enhance it.