You become Invisible at the same time and illusionary double of you appears where you are standing, the invisibility lasts until the end of your next turn, or until you make an attack/cast a spell (the illusionary double dissipates whenever you become visible).
You may use your action to control the double, the double can speak, move (equal to your movement), make noise, and appear completely as you would. However, physical interaction with the illusion will reveal it as such, and any creature that uses its action to examine the illusion can determine that it is an illusion with a successful investigation check against your spell save DC. If a creature discerns the illusion for what it is, the creature can see through the double, and its other sensory qualities become faint to the creature.
In addition, if someone addresses your double or attempts to make physical contact with them, you may use your reaction to control the double in a similar fashion.
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