After extracting the game files and downloading the patch, you need to move the patch into the "TroubleinParadise-1.0.0-" folder, then again, then move it into the "game" folder found within. That's where the patch needs to end up. Then just run the TroubleinParadise application, about 10 clicks in, after you can input a custom name for Iris, the game will confirm you have the patch installed and give you a choice about what you want her to be, before introducing the MC. If you see that, you did it well, if not you have to try again.